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Finding the Fourth Proportional to 198.91, 274.52 and 110.40

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Solution

The fourth proportional to 198.91, 274.52 and 110.40 is: 152.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.91 : 274.52 = 110.40 : x
  2. Step 2: Convert to fraction form
    198.91/274.52 = 110.40/x
  3. Step 3: Cross multiply
    198.91x = 274.52 × 110.40
  4. Step 4: Simplify right side
    198.91x = 30,306.46
  5. Step 5: Solve for x
    x = 30,306.46/198.91
  6. Step 6: Final answer
    x = 152.36

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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.