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Finding the Fourth Proportional to 396.28, 547.01 and 298.32

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Solution

The fourth proportional to 396.28, 547.01 and 298.32 is: 411.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.28 : 547.01 = 298.32 : x
  2. Step 2: Convert to fraction form
    396.28/547.01 = 298.32/x
  3. Step 3: Cross multiply
    396.28x = 547.01 × 298.32
  4. Step 4: Simplify right side
    396.28x = 163,184.02
  5. Step 5: Solve for x
    x = 163,184.02/396.28
  6. Step 6: Final answer
    x = 411.79

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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.