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Finding the Fourth Proportional to 97.92, 146.22 and 90.48

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Solution

The fourth proportional to 97.92, 146.22 and 90.48 is: 135.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    97.92 : 146.22 = 90.48 : x
  2. Step 2: Convert to fraction form
    97.92/146.22 = 90.48/x
  3. Step 3: Cross multiply
    97.92x = 146.22 × 90.48
  4. Step 4: Simplify right side
    97.92x = 13,229.99
  5. Step 5: Solve for x
    x = 13,229.99/97.92
  6. Step 6: Final answer
    x = 135.11

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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.