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Finding the Fourth Proportional to 168.18, 251.03 and 156.13

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Solution

The fourth proportional to 168.18, 251.03 and 156.13 is: 233.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.18 : 251.03 = 156.13 : x
  2. Step 2: Convert to fraction form
    168.18/251.03 = 156.13/x
  3. Step 3: Cross multiply
    168.18x = 251.03 × 156.13
  4. Step 4: Simplify right side
    168.18x = 39,193.31
  5. Step 5: Solve for x
    x = 39,193.31/168.18
  6. Step 6: Final answer
    x = 233.04

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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.