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Finding the Fourth Proportional to 323.17, 446.16 and 198.88

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Solution

The fourth proportional to 323.17, 446.16 and 198.88 is: 274.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.17 : 446.16 = 198.88 : x
  2. Step 2: Convert to fraction form
    323.17/446.16 = 198.88/x
  3. Step 3: Cross multiply
    323.17x = 446.16 × 198.88
  4. Step 4: Simplify right side
    323.17x = 88,732.30
  5. Step 5: Solve for x
    x = 88,732.30/323.17
  6. Step 6: Final answer
    x = 274.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.