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Finding the Third Proportional to 856.97 and 1,161.28

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Solution

The third proportional to 856.97 and 1,161.28 is: 1,573.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.97 : 1,161.28 = 1,161.28 : x
  2. Step 2: Convert to fraction form
    856.97/1,161.28 = 1,161.28/x
  3. Step 3: Cross multiply
    856.97x = 1,161.28 × 1,161.28
  4. Step 4: Simplify right side
    856.97x = 1,348,574.14
  5. Step 5: Solve for x
    x = 1,348,574.14/856.97
  6. Step 6: Final answer
    x = 1,573.66

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.