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Finding the Fourth Proportional to 396.98, 594.96 and 191.12

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Solution

The fourth proportional to 396.98, 594.96 and 191.12 is: 286.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.98 : 594.96 = 191.12 : x
  2. Step 2: Convert to fraction form
    396.98/594.96 = 191.12/x
  3. Step 3: Cross multiply
    396.98x = 594.96 × 191.12
  4. Step 4: Simplify right side
    396.98x = 113,708.76
  5. Step 5: Solve for x
    x = 113,708.76/396.98
  6. Step 6: Final answer
    x = 286.43

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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.