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Finding the Fourth Proportional to 197.97, 296.94 and 68.05

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Solution

The fourth proportional to 197.97, 296.94 and 68.05 is: 102.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.97 : 296.94 = 68.05 : x
  2. Step 2: Convert to fraction form
    197.97/296.94 = 68.05/x
  3. Step 3: Cross multiply
    197.97x = 296.94 × 68.05
  4. Step 4: Simplify right side
    197.97x = 20,206.77
  5. Step 5: Solve for x
    x = 20,206.77/197.97
  6. Step 6: Final answer
    x = 102.07

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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.