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Finding the Third Proportional to 62.19 and 72.84

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Solution

The third proportional to 62.19 and 72.84 is: 85.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.19 : 72.84 = 72.84 : x
  2. Step 2: Convert to fraction form
    62.19/72.84 = 72.84/x
  3. Step 3: Cross multiply
    62.19x = 72.84 × 72.84
  4. Step 4: Simplify right side
    62.19x = 5,306.21
  5. Step 5: Solve for x
    x = 5,306.21/62.19
  6. Step 6: Final answer
    x = 85.33

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Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.