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Finding the Fourth Proportional to 396.61, 594.92 and 122.70

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Solution

The fourth proportional to 396.61, 594.92 and 122.70 is: 184.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.61 : 594.92 = 122.70 : x
  2. Step 2: Convert to fraction form
    396.61/594.92 = 122.70/x
  3. Step 3: Cross multiply
    396.61x = 594.92 × 122.70
  4. Step 4: Simplify right side
    396.61x = 72,996.68
  5. Step 5: Solve for x
    x = 72,996.68/396.61
  6. Step 6: Final answer
    x = 184.05

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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.