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Finding the Third Proportional to 628.69 and 1,348.69

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Solution

The third proportional to 628.69 and 1,348.69 is: 2,893.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.69 : 1,348.69 = 1,348.69 : x
  2. Step 2: Convert to fraction form
    628.69/1,348.69 = 1,348.69/x
  3. Step 3: Cross multiply
    628.69x = 1,348.69 × 1,348.69
  4. Step 4: Simplify right side
    628.69x = 1,818,957.97
  5. Step 5: Solve for x
    x = 1,818,957.97/628.69
  6. Step 6: Final answer
    x = 2,893.26

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.