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Finding the Fourth Proportional to 198.07, 297.11 and 61.14

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Solution

The fourth proportional to 198.07, 297.11 and 61.14 is: 91.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.07 : 297.11 = 61.14 : x
  2. Step 2: Convert to fraction form
    198.07/297.11 = 61.14/x
  3. Step 3: Cross multiply
    198.07x = 297.11 × 61.14
  4. Step 4: Simplify right side
    198.07x = 18,165.31
  5. Step 5: Solve for x
    x = 18,165.31/198.07
  6. Step 6: Final answer
    x = 91.71

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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.