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Finding the Third Proportional to 133.59 and 203.91

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Solution

The third proportional to 133.59 and 203.91 is: 311.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.59 : 203.91 = 203.91 : x
  2. Step 2: Convert to fraction form
    133.59/203.91 = 203.91/x
  3. Step 3: Cross multiply
    133.59x = 203.91 × 203.91
  4. Step 4: Simplify right side
    133.59x = 41,577.76
  5. Step 5: Solve for x
    x = 41,577.76/133.59
  6. Step 6: Final answer
    x = 311.23

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.