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Finding the Third Proportional to 811.75 and 1,060.13

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Solution

The third proportional to 811.75 and 1,060.13 is: 1,384.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    811.75 : 1,060.13 = 1,060.13 : x
  2. Step 2: Convert to fraction form
    811.75/1,060.13 = 1,060.13/x
  3. Step 3: Cross multiply
    811.75x = 1,060.13 × 1,060.13
  4. Step 4: Simplify right side
    811.75x = 1,123,865.02
  5. Step 5: Solve for x
    x = 1,123,865.02/811.75
  6. Step 6: Final answer
    x = 1,384.50

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.