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Finding the Fourth Proportional to 197.49, 296.23 and 67.42

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Solution

The fourth proportional to 197.49, 296.23 and 67.42 is: 101.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.49 : 296.23 = 67.42 : x
  2. Step 2: Convert to fraction form
    197.49/296.23 = 67.42/x
  3. Step 3: Cross multiply
    197.49x = 296.23 × 67.42
  4. Step 4: Simplify right side
    197.49x = 19,972.31
  5. Step 5: Solve for x
    x = 19,972.31/197.49
  6. Step 6: Final answer
    x = 101.13

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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.