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Finding the Fourth Proportional to 396.92, 595.46 and 136.91

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Solution

The fourth proportional to 396.92, 595.46 and 136.91 is: 205.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.92 : 595.46 = 136.91 : x
  2. Step 2: Convert to fraction form
    396.92/595.46 = 136.91/x
  3. Step 3: Cross multiply
    396.92x = 595.46 × 136.91
  4. Step 4: Simplify right side
    396.92x = 81,520.77
  5. Step 5: Solve for x
    x = 81,520.77/396.92
  6. Step 6: Final answer
    x = 205.39

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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.