If $a : b = b : c$ , then $b$ is called the mean proportional between $a$ and $c$ ; and $a, b, c$ are said to be in proportion.
Are the given numbers in proportion: $2, 4, 8$

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Solution

Checking whether the numbers are in proportion or not
Given that,
$2, 4, 8$
According to the question,
$\Rightarrow 2 : 4 = 4 : 8 L H S \to \frac{2}{4} = \frac{1}{2} \to 1 : 2 R H S \to \frac{4}{8} = \frac{1}{2} \to 1 : 2$
As both the ratios are equal
Hence, the given numbers in proportion.

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If a:b=b:c, then b is called the mean proportional between a and c; and a,b,care said to be in proportion.Are the given numbers in proportion: 2,4,8

Checking whether the numbers are in proportion or notGiven that,2,4,8According to the question, ⇒2:4=4:8LHS→24=12→1:2RHS→48=12→1:2As both the ratios are equalHence, the given numbers in proportion.

If $a : b = b : c$ , then $b$ is called the mean proportional between $a$ and $c$ ; and $a, b, c$ are said to be in proportion.
Are the given numbers in proportion: $2, 4, 8$

Checking whether the numbers are in proportion or not
Given that,
$2, 4, 8$
According to the question,
$\Rightarrow 2 : 4 = 4 : 8 L H S \to \frac{2}{4} = \frac{1}{2} \to 1 : 2 R H S \to \frac{4}{8} = \frac{1}{2} \to 1 : 2$
As both the ratios are equal
Hence, the given numbers in proportion.