If a : b = c :d, than a + b : b = c + d : d is called theorem of :

• Alternando A
• Invertendo B
• Dividendo C
• Componendo D

If one quantity increases and other decreases, the variation is:

• Inverse A
• Direct B
• Indirect C
• Equal D

In a : b : : c : d, d is called:

• Thirdproportional A
• Fourthproportional B
• Meanproportional C
• Continuedproportional D

In continued proportion a:b = b:c, ac = b², b is said to be _______ proportional between a and c:

• Third A
• Fourth B
• Means C
• None of these D

• 
  A
• 
  B
• 
  C
• 
  D

In a proportion a:b:c:d, and d are called:

• Means A
• Extremes B
• Third proportional C
• None of these D

The ratio of a and b is written as:

• 
  A
• a : : b B
• a : b C
• a = b D

If y = 8 and x = 4, then k = xy, we get k =

• 12 A
• 32 B
• 84 C
• 114 D

In a : b : : b : c, where c is called:

• Fourth proportional A
• Meanproportional B
• Thirdproportional C
• Continuedproportional D

If y = kx, x = 7 and y = 6, then k =

• 42 A
• 
  B
• 13 C
• 
  D

If 12, p and 3 are in continued proportion, then p =

• 
  A
• 
  B
• 
  C
• 
  D

Product of extremes = product of ______.

• Consequents A
• Antecedent B
• Ratios C
• Means D

If a : b = c : d, then b : a = d : c is called theorem of:

• Invertendo A
• Alternando B
• Dividendo C
• Componendo D

• u = v² A
• u = kv² B
• uv² = k C
• uv² = 1 D

A proportion is a statement which expressed as an equivalence of:

• Four ratios A
• Threeratios B
• Tworatios C
• Oneratio D