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Finding the Fourth Proportional to 201.05, 301.15 and 119.69

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Solution

The fourth proportional to 201.05, 301.15 and 119.69 is: 179.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.05 : 301.15 = 119.69 : x
  2. Step 2: Convert to fraction form
    201.05/301.15 = 119.69/x
  3. Step 3: Cross multiply
    201.05x = 301.15 × 119.69
  4. Step 4: Simplify right side
    201.05x = 36,044.64
  5. Step 5: Solve for x
    x = 36,044.64/201.05
  6. Step 6: Final answer
    x = 179.28

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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.