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Finding the Fourth Proportional to 168.38, 251.39 and 158.08

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Solution

The fourth proportional to 168.38, 251.39 and 158.08 is: 236.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.38 : 251.39 = 158.08 : x
  2. Step 2: Convert to fraction form
    168.38/251.39 = 158.08/x
  3. Step 3: Cross multiply
    168.38x = 251.39 × 158.08
  4. Step 4: Simplify right side
    168.38x = 39,739.73
  5. Step 5: Solve for x
    x = 39,739.73/168.38
  6. Step 6: Final answer
    x = 236.01

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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.