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Finding the Fourth Proportional to 198.18, 273.24 and 163.08

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Solution

The fourth proportional to 198.18, 273.24 and 163.08 is: 224.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.18 : 273.24 = 163.08 : x
  2. Step 2: Convert to fraction form
    198.18/273.24 = 163.08/x
  3. Step 3: Cross multiply
    198.18x = 273.24 × 163.08
  4. Step 4: Simplify right side
    198.18x = 44,559.98
  5. Step 5: Solve for x
    x = 44,559.98/198.18
  6. Step 6: Final answer
    x = 224.85

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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.