Question

1:4::?:256 please explain

Answer 1

Answer:

product of external=1×256=256

product of internal =4×......

ration are proportion

so product of external = product of internal

4×....=256

...= 256/4

...= 64

1:4::64:256

Answer 2

It's basically a rule.

Product of extremes = Product of means

So,

let the unknown value be 'a'

1 *256 = 4* a

a = 256/4

a = 64