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Finding the Fourth Proportional to 163.38, 225.03 and 141.54

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Solution

The fourth proportional to 163.38, 225.03 and 141.54 is: 194.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.38 : 225.03 = 141.54 : x
  2. Step 2: Convert to fraction form
    163.38/225.03 = 141.54/x
  3. Step 3: Cross multiply
    163.38x = 225.03 × 141.54
  4. Step 4: Simplify right side
    163.38x = 31,850.75
  5. Step 5: Solve for x
    x = 31,850.75/163.38
  6. Step 6: Final answer
    x = 194.95

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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.