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Finding the Third Proportional to 851.13 and 1,355.17

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Solution

The third proportional to 851.13 and 1,355.17 is: 2,157.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    851.13 : 1,355.17 = 1,355.17 : x
  2. Step 2: Convert to fraction form
    851.13/1,355.17 = 1,355.17/x
  3. Step 3: Cross multiply
    851.13x = 1,355.17 × 1,355.17
  4. Step 4: Simplify right side
    851.13x = 1,836,480.22
  5. Step 5: Solve for x
    x = 1,836,480.22/851.13
  6. Step 6: Final answer
    x = 2,157.69

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.