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Finding the Fourth Proportional to 201.82, 276.69 and 198.17

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Solution

The fourth proportional to 201.82, 276.69 and 198.17 is: 271.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.82 : 276.69 = 198.17 : x
  2. Step 2: Convert to fraction form
    201.82/276.69 = 198.17/x
  3. Step 3: Cross multiply
    201.82x = 276.69 × 198.17
  4. Step 4: Simplify right side
    201.82x = 54,830.67
  5. Step 5: Solve for x
    x = 54,830.67/201.82
  6. Step 6: Final answer
    x = 271.69

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.