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Finding the Fourth Proportional to 501.89, 693.27 and 392.73

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Solution

The fourth proportional to 501.89, 693.27 and 392.73 is: 542.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.89 : 693.27 = 392.73 : x
  2. Step 2: Convert to fraction form
    501.89/693.27 = 392.73/x
  3. Step 3: Cross multiply
    501.89x = 693.27 × 392.73
  4. Step 4: Simplify right side
    501.89x = 272,267.93
  5. Step 5: Solve for x
    x = 272,267.93/501.89
  6. Step 6: Final answer
    x = 542.49

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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.