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Finding the Third Proportional to 712.31 and 1,492.13

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Solution

The third proportional to 712.31 and 1,492.13 is: 3,125.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    712.31 : 1,492.13 = 1,492.13 : x
  2. Step 2: Convert to fraction form
    712.31/1,492.13 = 1,492.13/x
  3. Step 3: Cross multiply
    712.31x = 1,492.13 × 1,492.13
  4. Step 4: Simplify right side
    712.31x = 2,226,437.02
  5. Step 5: Solve for x
    x = 2,226,437.02/712.31
  6. Step 6: Final answer
    x = 3,125.65

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.