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Finding the Fourth Proportional to 198.25, 273.48 and 149.04

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Solution

The fourth proportional to 198.25, 273.48 and 149.04 is: 205.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.25 : 273.48 = 149.04 : x
  2. Step 2: Convert to fraction form
    198.25/273.48 = 149.04/x
  3. Step 3: Cross multiply
    198.25x = 273.48 × 149.04
  4. Step 4: Simplify right side
    198.25x = 40,758.90
  5. Step 5: Solve for x
    x = 40,758.90/198.25
  6. Step 6: Final answer
    x = 205.60

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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.