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Finding the Fourth Proportional to 396.64, 594.12 and 331.48

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Solution

The fourth proportional to 396.64, 594.12 and 331.48 is: 496.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.64 : 594.12 = 331.48 : x
  2. Step 2: Convert to fraction form
    396.64/594.12 = 331.48/x
  3. Step 3: Cross multiply
    396.64x = 594.12 × 331.48
  4. Step 4: Simplify right side
    396.64x = 196,938.90
  5. Step 5: Solve for x
    x = 196,938.90/396.64
  6. Step 6: Final answer
    x = 496.52

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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.