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Finding the Fourth Proportional to 502.57, 753.54 and 297.20

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Solution

The fourth proportional to 502.57, 753.54 and 297.20 is: 445.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.57 : 753.54 = 297.20 : x
  2. Step 2: Convert to fraction form
    502.57/753.54 = 297.20/x
  3. Step 3: Cross multiply
    502.57x = 753.54 × 297.20
  4. Step 4: Simplify right side
    502.57x = 223,952.86
  5. Step 5: Solve for x
    x = 223,952.86/502.57
  6. Step 6: Final answer
    x = 445.61

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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.