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Finding the Fourth Proportional to 168.13, 250.91 and 148.87

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Solution

The fourth proportional to 168.13, 250.91 and 148.87 is: 222.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.13 : 250.91 = 148.87 : x
  2. Step 2: Convert to fraction form
    168.13/250.91 = 148.87/x
  3. Step 3: Cross multiply
    168.13x = 250.91 × 148.87
  4. Step 4: Simplify right side
    168.13x = 37,352.97
  5. Step 5: Solve for x
    x = 37,352.97/168.13
  6. Step 6: Final answer
    x = 222.17

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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.