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Finding the Fourth Proportional to 230.85, 344.80 and 198.44

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Solution

The fourth proportional to 230.85, 344.80 and 198.44 is: 296.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.85 : 344.80 = 198.44 : x
  2. Step 2: Convert to fraction form
    230.85/344.80 = 198.44/x
  3. Step 3: Cross multiply
    230.85x = 344.80 × 198.44
  4. Step 4: Simplify right side
    230.85x = 68,424.11
  5. Step 5: Solve for x
    x = 68,424.11/230.85
  6. Step 6: Final answer
    x = 296.40

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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.