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Finding the Fourth Proportional to 198.52, 297.30 and 137.48

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Solution

The fourth proportional to 198.52, 297.30 and 137.48 is: 205.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.52 : 297.30 = 137.48 : x
  2. Step 2: Convert to fraction form
    198.52/297.30 = 137.48/x
  3. Step 3: Cross multiply
    198.52x = 297.30 × 137.48
  4. Step 4: Simplify right side
    198.52x = 40,872.80
  5. Step 5: Solve for x
    x = 40,872.80/198.52
  6. Step 6: Final answer
    x = 205.89

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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.