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Finding the Fourth Proportional to 197.27, 271.58 and 171.39

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Solution

The fourth proportional to 197.27, 271.58 and 171.39 is: 235.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.27 : 271.58 = 171.39 : x
  2. Step 2: Convert to fraction form
    197.27/271.58 = 171.39/x
  3. Step 3: Cross multiply
    197.27x = 271.58 × 171.39
  4. Step 4: Simplify right side
    197.27x = 46,545.24
  5. Step 5: Solve for x
    x = 46,545.24/197.27
  6. Step 6: Final answer
    x = 235.95

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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.