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Finding the Third Proportional to 616.31 and 1,340.63

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Solution

The third proportional to 616.31 and 1,340.63 is: 2,916.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.31 : 1,340.63 = 1,340.63 : x
  2. Step 2: Convert to fraction form
    616.31/1,340.63 = 1,340.63/x
  3. Step 3: Cross multiply
    616.31x = 1,340.63 × 1,340.63
  4. Step 4: Simplify right side
    616.31x = 1,797,275.39
  5. Step 5: Solve for x
    x = 1,797,275.39/616.31
  6. Step 6: Final answer
    x = 2,916.18

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.