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Finding the Third Proportional to 702.75 and 1,480.31

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Solution

The third proportional to 702.75 and 1,480.31 is: 3,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    702.75 : 1,480.31 = 1,480.31 : x
  2. Step 2: Convert to fraction form
    702.75/1,480.31 = 1,480.31/x
  3. Step 3: Cross multiply
    702.75x = 1,480.31 × 1,480.31
  4. Step 4: Simplify right side
    702.75x = 2,191,325.10
  5. Step 5: Solve for x
    x = 2,191,325.10/702.75
  6. Step 6: Final answer
    x = 3,118.21

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.