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Finding the Third Proportional to 28.79 and 62.65

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Solution

The third proportional to 28.79 and 62.65 is: 136.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.79 : 62.65 = 62.65 : x
  2. Step 2: Convert to fraction form
    28.79/62.65 = 62.65/x
  3. Step 3: Cross multiply
    28.79x = 62.65 × 62.65
  4. Step 4: Simplify right side
    28.79x = 3,924.83
  5. Step 5: Solve for x
    x = 3,924.83/28.79
  6. Step 6: Final answer
    x = 136.31

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.