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Finding the Fourth Proportional to 197.97, 297.05 and 95.21

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Solution

The fourth proportional to 197.97, 297.05 and 95.21 is: 142.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.97 : 297.05 = 95.21 : x
  2. Step 2: Convert to fraction form
    197.97/297.05 = 95.21/x
  3. Step 3: Cross multiply
    197.97x = 297.05 × 95.21
  4. Step 4: Simplify right side
    197.97x = 28,280.17
  5. Step 5: Solve for x
    x = 28,280.17/197.97
  6. Step 6: Final answer
    x = 142.85

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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.