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Finding the Fourth Proportional to 198.93, 274.46 and 116.05

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Solution

The fourth proportional to 198.93, 274.46 and 116.05 is: 160.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.93 : 274.46 = 116.05 : x
  2. Step 2: Convert to fraction form
    198.93/274.46 = 116.05/x
  3. Step 3: Cross multiply
    198.93x = 274.46 × 116.05
  4. Step 4: Simplify right side
    198.93x = 31,851.08
  5. Step 5: Solve for x
    x = 31,851.08/198.93
  6. Step 6: Final answer
    x = 160.11

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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.