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Finding the Fourth Proportional to 163.92, 226.24 and 98.46

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Solution

The fourth proportional to 163.92, 226.24 and 98.46 is: 135.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.92 : 226.24 = 98.46 : x
  2. Step 2: Convert to fraction form
    163.92/226.24 = 98.46/x
  3. Step 3: Cross multiply
    163.92x = 226.24 × 98.46
  4. Step 4: Simplify right side
    163.92x = 22,275.59
  5. Step 5: Solve for x
    x = 22,275.59/163.92
  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.