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Finding the Third Proportional to 864.98 and 1,729.95

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Solution

The third proportional to 864.98 and 1,729.95 is: 3,459.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    864.98 : 1,729.95 = 1,729.95 : x
  2. Step 2: Convert to fraction form
    864.98/1,729.95 = 1,729.95/x
  3. Step 3: Cross multiply
    864.98x = 1,729.95 × 1,729.95
  4. Step 4: Simplify right side
    864.98x = 2,992,731.06
  5. Step 5: Solve for x
    x = 2,992,731.06/864.98
  6. Step 6: Final answer
    x = 3,459.90

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Why These Related Problems?

These problems maintain the same ratio (2) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.