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Finding the Fourth Proportional to 546.77, 820.13 and 135.89

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Solution

The fourth proportional to 546.77, 820.13 and 135.89 is: 203.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.77 : 820.13 = 135.89 : x
  2. Step 2: Convert to fraction form
    546.77/820.13 = 135.89/x
  3. Step 3: Cross multiply
    546.77x = 820.13 × 135.89
  4. Step 4: Simplify right side
    546.77x = 111,442.69
  5. Step 5: Solve for x
    x = 111,442.69/546.77
  6. Step 6: Final answer
    x = 203.82

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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.