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Finding the Fourth Proportional to 201.06, 301.11 and 98.09

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Solution

The fourth proportional to 201.06, 301.11 and 98.09 is: 146.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.06 : 301.11 = 98.09 : x
  2. Step 2: Convert to fraction form
    201.06/301.11 = 98.09/x
  3. Step 3: Cross multiply
    201.06x = 301.11 × 98.09
  4. Step 4: Simplify right side
    201.06x = 29,535.88
  5. Step 5: Solve for x
    x = 29,535.88/201.06
  6. Step 6: Final answer
    x = 146.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.