Advertisements
Advertisements
प्रश्न
The America’s famous Golden Gate bridge is 6480 ft long with 756 ft tall towers. A model of this bridge exhibited in a fair is 60 ft long with 7 ft tall towers. Is the model, in proportion to the original bridge?
उत्तर
6480 : 756, 60 : 7
Product of the means = 756 × 60
= 45360
Product of the extremes = 6480 × 7
= 45360
ad = bc
∴ They are in proportion
APPEARS IN
संबंधित प्रश्न
Find the fourth proportion to the following:
0.7, 4.9 and 1.6
If p, q and r in continued proportion, then prove the following:
(p + q + r )(p - q + r) = p2 + q2 + r2
Find the value of x in each of the following proportion:
27 : x : : 63 : 84
Write (T) for true and (F) for false in case of the following:
36 : 45 : : 80 : 100
Write (T) for true and (F) for false in case of the following:
30 bags : 18 bags : : Rs 450 : Rs 270
If 24 workers can build a wall in 15 days, how many days will 8 workers take to build a similar wall?
If a, b, c and d are in proportion, prove that: (5a + 7b) (2c – 3d) = (5c + 7d) (2a – 3b).
If a, b, c and d are in proportion, prove that: (a4 + c4) : (b4 + d4) = a2 c2 : b2 d2.
Find whether 12, 24, 18, 36 are in order that can be expressed as two ratios that are in proportion
A gets double of what B gets and B gets double of what C gets. Find A : B and B : C and verify whether the result is in proportion or not
