Advertisements
Advertisements
Question
Find whether 12, 24, 18, 36 are in order that can be expressed as two ratios that are in proportion
Advertisements
Solution
Yes, 12 : 24 : : 18 : 36
Because product of extremes 12 × 36 = 432
Product of means = 24 × 18 = 432
12 : 24 : : 18 : 36.
APPEARS IN
RELATED QUESTIONS
Find the mean proportional to (x – y) and (x3 – x2y).
Find mean proportional of `( x + y)/( x - y), (x^2 - y^2)/(x^2y^2)`
Check whether the following numbers are in continued proportion.
3, 5, 8
Find two nurnbers whose mean proportional is 12 and the third proportional is 324.
If a, b, c and dare in continued proportion, then prove that
`sqrt (("a + b + c")("b + c + d")) = sqrt "ab" + sqrt "bc" + sqrt "cd"`
If ax = by = cz; prove that `x^2/"yz" + y^2/"zx" + z^2/"xy" = "bc"/a^2 + "ca"/b^2 + "ab"/c^2`
If a, b, c and d are in proportion, prove that: `(a^2 + ab + b^2)/(a^2 - ab + b^2) = (c^2 + cd + d^2)/(c^2 - cd + d^2)`
What number must be added to each of the numbers 15, 17, 34 and 38 to make them proportional?
Determine if the following ratios form a proportion. Also, write the middle terms and extreme terms where the ratios form a proportion.
200 mL : 2.5 litre and ₹ 4 : ₹ 50
Are the following statements true?
45 km : 60 km = 12 hours : 15 hours
