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Finding the Fourth Proportional to 201.13, 301.99 and 124.42

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Solution

The fourth proportional to 201.13, 301.99 and 124.42 is: 186.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.13 : 301.99 = 124.42 : x
  2. Step 2: Convert to fraction form
    201.13/301.99 = 124.42/x
  3. Step 3: Cross multiply
    201.13x = 301.99 × 124.42
  4. Step 4: Simplify right side
    201.13x = 37,573.60
  5. Step 5: Solve for x
    x = 37,573.60/201.13
  6. Step 6: Final answer
    x = 186.81

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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.