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Finding the Fourth Proportional to 168.53, 251.39 and 163.55

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Solution

The fourth proportional to 168.53, 251.39 and 163.55 is: 243.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.53 : 251.39 = 163.55 : x
  2. Step 2: Convert to fraction form
    168.53/251.39 = 163.55/x
  3. Step 3: Cross multiply
    168.53x = 251.39 × 163.55
  4. Step 4: Simplify right side
    168.53x = 41,115.87
  5. Step 5: Solve for x
    x = 41,115.87/168.53
  6. Step 6: Final answer
    x = 243.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.