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Finding the Fourth Proportional to 625.28, 935.12 and 469.48

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Solution

The fourth proportional to 625.28, 935.12 and 469.48 is: 702.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.28 : 935.12 = 469.48 : x
  2. Step 2: Convert to fraction form
    625.28/935.12 = 469.48/x
  3. Step 3: Cross multiply
    625.28x = 935.12 × 469.48
  4. Step 4: Simplify right side
    625.28x = 439,020.14
  5. Step 5: Solve for x
    x = 439,020.14/625.28
  6. Step 6: Final answer
    x = 702.12

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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.