Question

a,b,c are in continued proportion .if a =3 and c=27then find b.​

Answer 1

Since a, b, c are in continued proportion

${b }^{2} = ac$

a=3

c=27

${b}^{2} = ac \\ \\ {b}^{2} = 3 \times 27 \\ \\ {b}^{2} = 81 \\ \\ b = \sqrt{81} \\ \\ \boxed{b = 9}$

Answer 2

Answer:

b = 9

Step-by-step explanation:

since a,b,c are in continued proportion.

b² = ac

a = 3

c = 27

b² = ac

b² = 3 × 27

b² = 81

b = √81

b = 9

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