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Finding the Fourth Proportional to 631.98, 942.94 and 627.12

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Solution

The fourth proportional to 631.98, 942.94 and 627.12 is: 935.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.98 : 942.94 = 627.12 : x
  2. Step 2: Convert to fraction form
    631.98/942.94 = 627.12/x
  3. Step 3: Cross multiply
    631.98x = 942.94 × 627.12
  4. Step 4: Simplify right side
    631.98x = 591,336.53
  5. Step 5: Solve for x
    x = 591,336.53/631.98
  6. Step 6: Final answer
    x = 935.69

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.