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Finding the Fourth Proportional to 625.92, 937.44 and 487.84

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Solution

The fourth proportional to 625.92, 937.44 and 487.84 is: 730.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.92 : 937.44 = 487.84 : x
  2. Step 2: Convert to fraction form
    625.92/937.44 = 487.84/x
  3. Step 3: Cross multiply
    625.92x = 937.44 × 487.84
  4. Step 4: Simplify right side
    625.92x = 457,320.73
  5. Step 5: Solve for x
    x = 457,320.73/625.92
  6. Step 6: Final answer
    x = 730.64

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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.