Question

If b is the mean proportional of a and c then (a-b)^3 : (b-c)^3?

Answer 1

A/q
(a+c)÷2=b
a+c=b+b
a-b=b-c
therefore
(a-b)^3:(b-c)^3
(b-c)^3:(b-c)^3
=1

Answer 2

the answer is a^3/b^3