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Finding the Fourth Proportional to 168.67, 251.51 and 159.49

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Solution

The fourth proportional to 168.67, 251.51 and 159.49 is: 237.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.67 : 251.51 = 159.49 : x
  2. Step 2: Convert to fraction form
    168.67/251.51 = 159.49/x
  3. Step 3: Cross multiply
    168.67x = 251.51 × 159.49
  4. Step 4: Simplify right side
    168.67x = 40,113.33
  5. Step 5: Solve for x
    x = 40,113.33/168.67
  6. Step 6: Final answer
    x = 237.82

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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.