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Finding the Third Proportional to 640.13 and 1,702.13

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Solution

The third proportional to 640.13 and 1,702.13 is: 4,526.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.13 : 1,702.13 = 1,702.13 : x
  2. Step 2: Convert to fraction form
    640.13/1,702.13 = 1,702.13/x
  3. Step 3: Cross multiply
    640.13x = 1,702.13 × 1,702.13
  4. Step 4: Simplify right side
    640.13x = 2,897,229.52
  5. Step 5: Solve for x
    x = 2,897,229.52/640.13
  6. Step 6: Final answer
    x = 4,526.04

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Why These Related Problems?

These problems maintain the same ratio (2.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.