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Finding the Third Proportional to 712 and 1,246

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Solution

The third proportional to 712 and 1,246 is: 2,180.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    712 : 1,246 = 1,246 : x
  2. Step 2: Convert to fraction form
    712/1,246 = 1,246/x
  3. Step 3: Cross multiply
    712x = 1,246 × 1,246
  4. Step 4: Simplify right side
    712x = 1,552,516
  5. Step 5: Solve for x
    x = 1,552,516/712
  6. Step 6: Final answer
    x = 2,180.50

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Why These Related Problems?

These problems maintain the same ratio (1.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.