Question

find the relationship between 2:9::64:

Answer 1

2/9=64/x
x=64*9/2
x=32*9
x=288

Answer 2

Let the missing number be x.

Then the equation will be 2 : 9  :: 64 : x

                                         2/9 = 64/x
 
                                         x = 64 * 9/2

                                            = 288.

So, it will be 2:9::64:288.

Hope this helps!