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Finding the Fourth Proportional to 637.96, 956.80 and 329.68

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Solution

The fourth proportional to 637.96, 956.80 and 329.68 is: 494.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.96 : 956.80 = 329.68 : x
  2. Step 2: Convert to fraction form
    637.96/956.80 = 329.68/x
  3. Step 3: Cross multiply
    637.96x = 956.80 × 329.68
  4. Step 4: Simplify right side
    637.96x = 315,437.82
  5. Step 5: Solve for x
    x = 315,437.82/637.96
  6. Step 6: Final answer
    x = 494.45

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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.