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Finding the Fourth Proportional to 296.62, 445.08 and 198.88

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Solution

The fourth proportional to 296.62, 445.08 and 198.88 is: 298.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.62 : 445.08 = 198.88 : x
  2. Step 2: Convert to fraction form
    296.62/445.08 = 198.88/x
  3. Step 3: Cross multiply
    296.62x = 445.08 × 198.88
  4. Step 4: Simplify right side
    296.62x = 88,517.51
  5. Step 5: Solve for x
    x = 88,517.51/296.62
  6. Step 6: Final answer
    x = 298.42

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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.