Question

a, b, c in continued proportion.If a=3 and c=27 then find b

Answer 1

If
a=3
b=3×3
c=3×3×3

a=3; b=9; c=27

Answer 2

Answer:

$\text{The value of b is }\pm 9$

Step-by-step explanation:

Given a, b, c are in continued proportion.

$\frac{a}{b}=\frac{b}{c}$

since they are in continued proportion.

$ac=b^2$

$b^2=3\times 27$

$b^2=81$

$b=\sqrt{81}$

$b=\pm 9$

$\text{The value of b is }\pm 9$