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Finding the Third Proportional to 805.31 and 866.06

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Solution

The third proportional to 805.31 and 866.06 is: 931.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    805.31 : 866.06 = 866.06 : x
  2. Step 2: Convert to fraction form
    805.31/866.06 = 866.06/x
  3. Step 3: Cross multiply
    805.31x = 866.06 × 866.06
  4. Step 4: Simplify right side
    805.31x = 750,064.25
  5. Step 5: Solve for x
    x = 750,064.25/805.31
  6. Step 6: Final answer
    x = 931.40

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.