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Finding the Fourth Proportional to 629.98, 939.95 and 625.12

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Solution

The fourth proportional to 629.98, 939.95 and 625.12 is: 932.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.98 : 939.95 = 625.12 : x
  2. Step 2: Convert to fraction form
    629.98/939.95 = 625.12/x
  3. Step 3: Cross multiply
    629.98x = 939.95 × 625.12
  4. Step 4: Simplify right side
    629.98x = 587,581.93
  5. Step 5: Solve for x
    x = 587,581.93/629.98
  6. Step 6: Final answer
    x = 932.70

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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.