Question

Find the third proportional to 2 km, 650 m and 80 kg
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Answer 1

The third proportion is 3200/13 kg

Step-by-step explanation:

Let the third proportion is x

Now, we know that

1 km = 1000 m

Hence, 2 km = 2000 m

Therefore, the proportion is

2000:650 = x : 80

Write in ratios form

$\frac{2000}{650}=\frac{x}{80}\\\\\frac{40}{13}=\frac{x}{80}\\\\13x=40\times80\\\\x=\frac{3200}{13}$

Therefore, the third proportion is 3200/13 kg

#Learn More:

Find the mean proportional of 3 and 75

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Answer 2

Answer:

The mean proportion between 3 and 75 is written as

3:x::x:75, or

x^2 = 3*75 = 225, or

x = 15. So we have

3:15::15:75

The mean proportion is thus 15.