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Finding the Fourth Proportional to 629.71, 944.23 and 218.73

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Solution

The fourth proportional to 629.71, 944.23 and 218.73 is: 327.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.71 : 944.23 = 218.73 : x
  2. Step 2: Convert to fraction form
    629.71/944.23 = 218.73/x
  3. Step 3: Cross multiply
    629.71x = 944.23 × 218.73
  4. Step 4: Simplify right side
    629.71x = 206,531.43
  5. Step 5: Solve for x
    x = 206,531.43/629.71
  6. Step 6: Final answer
    x = 327.98

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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.