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Finding the Fourth Proportional to 201.09, 301.51 and 136.09

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Solution

The fourth proportional to 201.09, 301.51 and 136.09 is: 204.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.09 : 301.51 = 136.09 : x
  2. Step 2: Convert to fraction form
    201.09/301.51 = 136.09/x
  3. Step 3: Cross multiply
    201.09x = 301.51 × 136.09
  4. Step 4: Simplify right side
    201.09x = 41,031.40
  5. Step 5: Solve for x
    x = 41,031.40/201.09
  6. Step 6: Final answer
    x = 204.04

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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.