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Finding the Fourth Proportional to 546.92, 820.38 and 181.61

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Solution

The fourth proportional to 546.92, 820.38 and 181.61 is: 272.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.92 : 820.38 = 181.61 : x
  2. Step 2: Convert to fraction form
    546.92/820.38 = 181.61/x
  3. Step 3: Cross multiply
    546.92x = 820.38 × 181.61
  4. Step 4: Simplify right side
    546.92x = 148,989.21
  5. Step 5: Solve for x
    x = 148,989.21/546.92
  6. Step 6: Final answer
    x = 272.42

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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.