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Finding the Fourth Proportional to 168.38, 232.41 and 98.45

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Solution

The fourth proportional to 168.38, 232.41 and 98.45 is: 135.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.38 : 232.41 = 98.45 : x
  2. Step 2: Convert to fraction form
    168.38/232.41 = 98.45/x
  3. Step 3: Cross multiply
    168.38x = 232.41 × 98.45
  4. Step 4: Simplify right side
    168.38x = 22,880.76
  5. Step 5: Solve for x
    x = 22,880.76/168.38
  6. Step 6: Final answer
    x = 135.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.