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Finding the Fourth Proportional to 637.73, 958.20 and 406.73

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Solution

The fourth proportional to 637.73, 958.20 and 406.73 is: 611.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.73 : 958.20 = 406.73 : x
  2. Step 2: Convert to fraction form
    637.73/958.20 = 406.73/x
  3. Step 3: Cross multiply
    637.73x = 958.20 × 406.73
  4. Step 4: Simplify right side
    637.73x = 389,728.69
  5. Step 5: Solve for x
    x = 389,728.69/637.73
  6. Step 6: Final answer
    x = 611.12

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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.