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Finding the Fourth Proportional to 396.28, 547.04 and 247.04

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Solution

The fourth proportional to 396.28, 547.04 and 247.04 is: 341.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.28 : 547.04 = 247.04 : x
  2. Step 2: Convert to fraction form
    396.28/547.04 = 247.04/x
  3. Step 3: Cross multiply
    396.28x = 547.04 × 247.04
  4. Step 4: Simplify right side
    396.28x = 135,140.76
  5. Step 5: Solve for x
    x = 135,140.76/396.28
  6. Step 6: Final answer
    x = 341.02

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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.