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Finding the Third Proportional to 702.75 and 765.75

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Solution

The third proportional to 702.75 and 765.75 is: 834.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.75 : 765.75 = 765.75 : x
  2. Step 2: Convert to fraction form
    702.75/765.75 = 765.75/x
  3. Step 3: Cross multiply
    702.75x = 765.75 × 765.75
  4. Step 4: Simplify right side
    702.75x = 586,373.06
  5. Step 5: Solve for x
    x = 586,373.06/702.75
  6. Step 6: Final answer
    x = 834.40

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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.