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Finding the Fourth Proportional to 546.38, 819.75 and 181.43

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Solution

The fourth proportional to 546.38, 819.75 and 181.43 is: 272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.38 : 819.75 = 181.43 : x
  2. Step 2: Convert to fraction form
    546.38/819.75 = 181.43/x
  3. Step 3: Cross multiply
    546.38x = 819.75 × 181.43
  4. Step 4: Simplify right side
    546.38x = 148,727.24
  5. Step 5: Solve for x
    x = 148,727.24/546.38
  6. Step 6: Final answer
    x = 272.20

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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.