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Finding the Fourth Proportional to 198.72, 298.25 and 168.06

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Solution

The fourth proportional to 198.72, 298.25 and 168.06 is: 252.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.72 : 298.25 = 168.06 : x
  2. Step 2: Convert to fraction form
    198.72/298.25 = 168.06/x
  3. Step 3: Cross multiply
    198.72x = 298.25 × 168.06
  4. Step 4: Simplify right side
    198.72x = 50,123.90
  5. Step 5: Solve for x
    x = 50,123.90/198.72
  6. Step 6: Final answer
    x = 252.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.