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Finding the Fourth Proportional to 396.85, 547.92 and 247.53

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Solution

The fourth proportional to 396.85, 547.92 and 247.53 is: 341.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.85 : 547.92 = 247.53 : x
  2. Step 2: Convert to fraction form
    396.85/547.92 = 247.53/x
  3. Step 3: Cross multiply
    396.85x = 547.92 × 247.53
  4. Step 4: Simplify right side
    396.85x = 135,626.64
  5. Step 5: Solve for x
    x = 135,626.64/396.85
  6. Step 6: Final answer
    x = 341.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.