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Finding the Fourth Proportional to 198.68, 296.56 and 166.16

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Solution

The fourth proportional to 198.68, 296.56 and 166.16 is: 248.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.68 : 296.56 = 166.16 : x
  2. Step 2: Convert to fraction form
    198.68/296.56 = 166.16/x
  3. Step 3: Cross multiply
    198.68x = 296.56 × 166.16
  4. Step 4: Simplify right side
    198.68x = 49,276.41
  5. Step 5: Solve for x
    x = 49,276.41/198.68
  6. Step 6: Final answer
    x = 248.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.