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Finding the Fourth Proportional to 724.52, 999.26 and 637

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Solution

The fourth proportional to 724.52, 999.26 and 637 is: 878.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.52 : 999.26 = 637 : x
  2. Step 2: Convert to fraction form
    724.52/999.26 = 637/x
  3. Step 3: Cross multiply
    724.52x = 999.26 × 637
  4. Step 4: Simplify right side
    724.52x = 636,528.62
  5. Step 5: Solve for x
    x = 636,528.62/724.52
  6. Step 6: Final answer
    x = 878.55

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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.