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Finding the Fourth Proportional to 725.82, 1,001.52 and 477.24

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Solution

The fourth proportional to 725.82, 1,001.52 and 477.24 is: 658.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    725.82 : 1,001.52 = 477.24 : x
  2. Step 2: Convert to fraction form
    725.82/1,001.52 = 477.24/x
  3. Step 3: Cross multiply
    725.82x = 1,001.52 × 477.24
  4. Step 4: Simplify right side
    725.82x = 477,965.40
  5. Step 5: Solve for x
    x = 477,965.40/725.82
  6. Step 6: Final answer
    x = 658.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.