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Finding the Fourth Proportional to 201.49, 301.93 and 98.66

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Solution

The fourth proportional to 201.49, 301.93 and 98.66 is: 147.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.49 : 301.93 = 98.66 : x
  2. Step 2: Convert to fraction form
    201.49/301.93 = 98.66/x
  3. Step 3: Cross multiply
    201.49x = 301.93 × 98.66
  4. Step 4: Simplify right side
    201.49x = 29,786.41
  5. Step 5: Solve for x
    x = 29,786.41/201.49
  6. Step 6: Final answer
    x = 147.83

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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.