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Finding the Fourth Proportional to 397.47, 595.95 and 133.89

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Solution

The fourth proportional to 397.47, 595.95 and 133.89 is: 200.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.47 : 595.95 = 133.89 : x
  2. Step 2: Convert to fraction form
    397.47/595.95 = 133.89/x
  3. Step 3: Cross multiply
    397.47x = 595.95 × 133.89
  4. Step 4: Simplify right side
    397.47x = 79,791.75
  5. Step 5: Solve for x
    x = 79,791.75/397.47
  6. Step 6: Final answer
    x = 200.75

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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.