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Finding the Fourth Proportional to 629.28, 872.39 and 595.96

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Solution

The fourth proportional to 629.28, 872.39 and 595.96 is: 826.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.28 : 872.39 = 595.96 : x
  2. Step 2: Convert to fraction form
    629.28/872.39 = 595.96/x
  3. Step 3: Cross multiply
    629.28x = 872.39 × 595.96
  4. Step 4: Simplify right side
    629.28x = 519,909.89
  5. Step 5: Solve for x
    x = 519,909.89/629.28
  6. Step 6: Final answer
    x = 826.19

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.