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Finding the Third Proportional to 821 and 1,295

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Solution

The third proportional to 821 and 1,295 is: 2,042.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    821 : 1,295 = 1,295 : x
  2. Step 2: Convert to fraction form
    821/1,295 = 1,295/x
  3. Step 3: Cross multiply
    821x = 1,295 × 1,295
  4. Step 4: Simplify right side
    821x = 1,677,025
  5. Step 5: Solve for x
    x = 1,677,025/821
  6. Step 6: Final answer
    x = 2,042.66

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.