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Finding the Third Proportional to 65 and 134.38

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Solution

The third proportional to 65 and 134.38 is: 277.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    65 : 134.38 = 134.38 : x
  2. Step 2: Convert to fraction form
    65/134.38 = 134.38/x
  3. Step 3: Cross multiply
    65x = 134.38 × 134.38
  4. Step 4: Simplify right side
    65x = 18,056.64
  5. Step 5: Solve for x
    x = 18,056.64/65
  6. Step 6: Final answer
    x = 277.79

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.