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Finding the Fourth Proportional to 546.33, 819.49 and 135.47

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Solution

The fourth proportional to 546.33, 819.49 and 135.47 is: 203.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.33 : 819.49 = 135.47 : x
  2. Step 2: Convert to fraction form
    546.33/819.49 = 135.47/x
  3. Step 3: Cross multiply
    546.33x = 819.49 × 135.47
  4. Step 4: Simplify right side
    546.33x = 111,018.66
  5. Step 5: Solve for x
    x = 111,018.66/546.33
  6. Step 6: Final answer
    x = 203.21

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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.