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Finding the Third Proportional to 60.75 and 65.94

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Solution

The third proportional to 60.75 and 65.94 is: 71.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.75 : 65.94 = 65.94 : x
  2. Step 2: Convert to fraction form
    60.75/65.94 = 65.94/x
  3. Step 3: Cross multiply
    60.75x = 65.94 × 65.94
  4. Step 4: Simplify right side
    60.75x = 4,347.75
  5. Step 5: Solve for x
    x = 4,347.75/60.75
  6. Step 6: Final answer
    x = 71.57

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.