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Finding the Fourth Proportional to 396.41, 594.90 and 343.49

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Solution

The fourth proportional to 396.41, 594.90 and 343.49 is: 515.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.41 : 594.90 = 343.49 : x
  2. Step 2: Convert to fraction form
    396.41/594.90 = 343.49/x
  3. Step 3: Cross multiply
    396.41x = 594.90 × 343.49
  4. Step 4: Simplify right side
    396.41x = 204,342.20
  5. Step 5: Solve for x
    x = 204,342.20/396.41
  6. Step 6: Final answer
    x = 515.48

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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.