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Finding the Fourth Proportional to 637.91, 956.91 and 329.57

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Solution

The fourth proportional to 637.91, 956.91 and 329.57 is: 494.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.91 : 956.91 = 329.57 : x
  2. Step 2: Convert to fraction form
    637.91/956.91 = 329.57/x
  3. Step 3: Cross multiply
    637.91x = 956.91 × 329.57
  4. Step 4: Simplify right side
    637.91x = 315,368.87
  5. Step 5: Solve for x
    x = 315,368.87/637.91
  6. Step 6: Final answer
    x = 494.38

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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.