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Finding the Fourth Proportional to 201.11, 301.51 and 103.41

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Solution

The fourth proportional to 201.11, 301.51 and 103.41 is: 155.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.11 : 301.51 = 103.41 : x
  2. Step 2: Convert to fraction form
    201.11/301.51 = 103.41/x
  3. Step 3: Cross multiply
    201.11x = 301.51 × 103.41
  4. Step 4: Simplify right side
    201.11x = 31,178.89
  5. Step 5: Solve for x
    x = 31,178.89/201.11
  6. Step 6: Final answer
    x = 155.04

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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.