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Finding the Fourth Proportional to 198.48, 296.91 and 169.59

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Solution

The fourth proportional to 198.48, 296.91 and 169.59 is: 253.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.48 : 296.91 = 169.59 : x
  2. Step 2: Convert to fraction form
    198.48/296.91 = 169.59/x
  3. Step 3: Cross multiply
    198.48x = 296.91 × 169.59
  4. Step 4: Simplify right side
    198.48x = 50,352.97
  5. Step 5: Solve for x
    x = 50,352.97/198.48
  6. Step 6: Final answer
    x = 253.69

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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.