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Finding the Third Proportional to 856.88 and 1,043.25

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Solution

The third proportional to 856.88 and 1,043.25 is: 1,270.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.88 : 1,043.25 = 1,043.25 : x
  2. Step 2: Convert to fraction form
    856.88/1,043.25 = 1,043.25/x
  3. Step 3: Cross multiply
    856.88x = 1,043.25 × 1,043.25
  4. Step 4: Simplify right side
    856.88x = 1,088,370.56
  5. Step 5: Solve for x
    x = 1,088,370.56/856.88
  6. Step 6: Final answer
    x = 1,270.16

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.