Dynamic Linq query with multiple Where Average - entity-framework

Question

I can get my average rating value for specific result like below:
var result1 = items.Where(x => x.Ratings.Average(y => y.MyRate == 1));
var result2 = items.Where(x => x.Ratings.Average(y => y.MyRate == 2));
var result3 = items.Where(x => x.Ratings.Average(y => y.MyRate == 3));
...
So result1 contains only items with avg rating is 1
So result2 contains only items with avg rating is 2
So result3 contains only items with avg rating is 3
...
Now, I would like to be able to combine these queries. I mean for example to get items with avg rating of 2, 3 and 4 at the same time.
var results = items.Where(x => x.Ratings.Average(y => y.MyRate == 2 ||
x.Ratings.Average(y => y.MyRate == 3 ||
x.Ratings.Average(y => y.MyRate == 4));
The solution above is not dynamic because 2, 3, 4 are fix.
So let's say I have variable ratings which is a list of rating values. How can I query all items with avg rating contained in this variable ?
List<int> ratings = new List<int>() { 2, 3, 4};
var results = items.Where(x => x.Ratings.Average(y => y.MyRate in ratings)); <--- does not work

Answer 1

Tested using Linq Contains
List<decimal> ratings = new List<decimal>() { 1, 2, 3, 4 };
var result = items.Where(x => ratings.Contains(x.Ratings.Average(y => y.MyRate)));
Heres the classes I used for testing. The above query contains Toy Story 2 and 3 but not 4 as Toy Story 4's average is not in ratings
class Item
{
public string Name { get; set; }
public ICollection<Rating> Ratings { get; set; }
}
class Rating
{
public decimal MyRate { get; set; }
}
With the following initialization code
var items = new List<Item>
{
new Item //MyRate average = 1
{
Name = "Toy Story 2",
Ratings = new List<Rating>
{
new Rating { MyRate = 1 },
new Rating { MyRate = 1 },
new Rating { MyRate = 1 }
}
},
new Item //MyRate average = 2
{
Name = "Toy Story 3",
Ratings = new List<Rating>
{
new Rating { MyRate = 1 },
new Rating { MyRate = 2 },
new Rating { MyRate = 3 }
}
},
new Item //MyRate average = 1.33
{
Name = "Toy Story 4",
Ratings = new List<Rating>
{
new Rating { MyRate = 1 },
new Rating { MyRate = 1 },
new Rating { MyRate = 2 }
}
}
};