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Finding the Third Proportional to 33.19 and 72.84

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Solution

The third proportional to 33.19 and 72.84 is: 159.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    33.19 : 72.84 = 72.84 : x
  2. Step 2: Convert to fraction form
    33.19/72.84 = 72.84/x
  3. Step 3: Cross multiply
    33.19x = 72.84 × 72.84
  4. Step 4: Simplify right side
    33.19x = 5,306.21
  5. Step 5: Solve for x
    x = 5,306.21/33.19
  6. Step 6: Final answer
    x = 159.89

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.