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Finding the Third Proportional to 765.07 and 1,688.13

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Solution

The third proportional to 765.07 and 1,688.13 is: 3,724.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    765.07 : 1,688.13 = 1,688.13 : x
  2. Step 2: Convert to fraction form
    765.07/1,688.13 = 1,688.13/x
  3. Step 3: Cross multiply
    765.07x = 1,688.13 × 1,688.13
  4. Step 4: Simplify right side
    765.07x = 2,849,792.39
  5. Step 5: Solve for x
    x = 2,849,792.39/765.07
  6. Step 6: Final answer
    x = 3,724.88

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.