Advertisements
Advertisements
प्रश्न
If x, 12 and 16 are in continued proportion! find x.
Advertisements
उत्तर
Since x, 12 and 16 are in continued proportion
⇒ x : 12 : : 12 : 16
⇒ 16 x = 12 x 12
⇒ 16 x = 144
⇒ x = 9
x = 9
APPEARS IN
संबंधित प्रश्न
Using properties of proportion, solve for x:
`(sqrt(x + 5) + sqrt(x - 16))/(sqrt(x + 5) - sqrt(x - 16)) = 7/3`
Find the fourth proportion to the following:
(p2q - qr2 ), (pqr - pr2 ) and (pq2 - pr2)
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 q is the mean proportional between p and r, prove that
`p^2 - q^2 + r^2 = q^4[(1)/p^2 - (1)/q^2 + (1)/r^2]`.
Determine if the following ratio form a proportion:
2 kg : 80 kg and 25 g : 625 kg
If a, b, c and d are in proportion, prove that: (ma + nb) : b = (mc + nd) : d
Choose the correct answer from the given options :
The fourth proportional to 3, 4, 5 is
A recipe calls for 1 cup of milk for every `2 1/2` cups of flour to make a cake that would feed 6 persons. How many cups of both flour and milk will be needed to make a similar cake for 8 people?
Write True (T) or False (F) against the following statement:
12 : 18 : : 28 : 12
Are the following statements true?
45 km : 60 km = 12 hours : 15 hours
