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Finding the Fourth Proportional to 629.43, 944.14 and 218.57

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Solution

The fourth proportional to 629.43, 944.14 and 218.57 is: 327.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.43 : 944.14 = 218.57 : x
  2. Step 2: Convert to fraction form
    629.43/944.14 = 218.57/x
  3. Step 3: Cross multiply
    629.43x = 944.14 × 218.57
  4. Step 4: Simplify right side
    629.43x = 206,355.96
  5. Step 5: Solve for x
    x = 206,355.96/629.43
  6. Step 6: Final answer
    x = 327.85

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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.