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Finding the Fourth Proportional to 546.68, 820.01 and 135.81

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Solution

The fourth proportional to 546.68, 820.01 and 135.81 is: 203.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.68 : 820.01 = 135.81 : x
  2. Step 2: Convert to fraction form
    546.68/820.01 = 135.81/x
  3. Step 3: Cross multiply
    546.68x = 820.01 × 135.81
  4. Step 4: Simplify right side
    546.68x = 111,364.88
  5. Step 5: Solve for x
    x = 111,364.88/546.68
  6. Step 6: Final answer
    x = 203.71

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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.