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Finding the Third Proportional to 783.56 and 1,699.31

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Solution

The third proportional to 783.56 and 1,699.31 is: 3,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.56 : 1,699.31 = 1,699.31 : x
  2. Step 2: Convert to fraction form
    783.56/1,699.31 = 1,699.31/x
  3. Step 3: Cross multiply
    783.56x = 1,699.31 × 1,699.31
  4. Step 4: Simplify right side
    783.56x = 2,887,662.97
  5. Step 5: Solve for x
    x = 2,887,662.97/783.56
  6. Step 6: Final answer
    x = 3,685.30

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.