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Finding the Fourth Proportional to 546.17, 819.23 and 272.21

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Solution

The fourth proportional to 546.17, 819.23 and 272.21 is: 408.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.17 : 819.23 = 272.21 : x
  2. Step 2: Convert to fraction form
    546.17/819.23 = 272.21/x
  3. Step 3: Cross multiply
    546.17x = 819.23 × 272.21
  4. Step 4: Simplify right side
    546.17x = 222,997.14
  5. Step 5: Solve for x
    x = 222,997.14/546.17
  6. Step 6: Final answer
    x = 408.30

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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.