If $a, 6, 8$ are in continued proportion, $a$ equals

If $a, 6, 8$ are in continued proportion, $a$ equals
  1. $\dfrac{9}{2}$
  2. $4$
  3. $12$
  4. $3$

Solution

$6^{2} = 8a \Rightarrow 36 = 8a \Rightarrow a = \dfrac{36}{8} = \dfrac{9}{2}$.

Asked in: MH-SSC-9

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