Question

If a, b, c are in proportion, then
(a) a = bc
(b) b² = ac
(c) c = ab​

Answer 1

Option B is correct

a:b = b:c

a/b = b/c

By cross multiplication we get

b² = ac

Answer 2

Answer:

option b

Step-by-step explanation:

a:b:c

=) a : b :: b : c

=) b×b = a × c

=)b^2 = ac