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Finding the Fourth Proportional to 168.16, 250.95 and 157.15

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Solution

The fourth proportional to 168.16, 250.95 and 157.15 is: 234.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.16 : 250.95 = 157.15 : x
  2. Step 2: Convert to fraction form
    168.16/250.95 = 157.15/x
  3. Step 3: Cross multiply
    168.16x = 250.95 × 157.15
  4. Step 4: Simplify right side
    168.16x = 39,436.79
  5. Step 5: Solve for x
    x = 39,436.79/168.16
  6. Step 6: Final answer
    x = 234.52

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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.