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Finding the Fourth Proportional to 133.83, 201.24 and 103.47

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Solution

The fourth proportional to 133.83, 201.24 and 103.47 is: 155.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.83 : 201.24 = 103.47 : x
  2. Step 2: Convert to fraction form
    133.83/201.24 = 103.47/x
  3. Step 3: Cross multiply
    133.83x = 201.24 × 103.47
  4. Step 4: Simplify right side
    133.83x = 20,822.30
  5. Step 5: Solve for x
    x = 20,822.30/133.83
  6. Step 6: Final answer
    x = 155.59

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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.