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Finding the Fourth Proportional to 198.07, 296.90 and 68.01

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Solution

The fourth proportional to 198.07, 296.90 and 68.01 is: 101.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.07 : 296.90 = 68.01 : x
  2. Step 2: Convert to fraction form
    198.07/296.90 = 68.01/x
  3. Step 3: Cross multiply
    198.07x = 296.90 × 68.01
  4. Step 4: Simplify right side
    198.07x = 20,192.17
  5. Step 5: Solve for x
    x = 20,192.17/198.07
  6. Step 6: Final answer
    x = 101.94

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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.