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Finding the Fourth Proportional to 396.77, 595.10 and 191.29

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Solution

The fourth proportional to 396.77, 595.10 and 191.29 is: 286.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.77 : 595.10 = 191.29 : x
  2. Step 2: Convert to fraction form
    396.77/595.10 = 191.29/x
  3. Step 3: Cross multiply
    396.77x = 595.10 × 191.29
  4. Step 4: Simplify right side
    396.77x = 113,832.75
  5. Step 5: Solve for x
    x = 113,832.75/396.77
  6. Step 6: Final answer
    x = 286.90

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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.