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Finding the Fourth Proportional to 626.24, 937.92 and 615.68

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Solution

The fourth proportional to 626.24, 937.92 and 615.68 is: 922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.24 : 937.92 = 615.68 : x
  2. Step 2: Convert to fraction form
    626.24/937.92 = 615.68/x
  3. Step 3: Cross multiply
    626.24x = 937.92 × 615.68
  4. Step 4: Simplify right side
    626.24x = 577,458.59
  5. Step 5: Solve for x
    x = 577,458.59/626.24
  6. Step 6: Final answer
    x = 922.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.