Question

(5)

a, b, c are in continued proportion. If a = 3 and c = 27 then find b.
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Answer 1

Answer:

the answer for this quetion is b=9

Answer 2

If a, b and c are in continued proportion, then, we can write the following :

a:b :: b:c

=> b² = ac = 3×27 = 81

Therefore, b = √81 = 9