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Finding the Third Proportional to 399 and 880.13

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Solution

The third proportional to 399 and 880.13 is: 1,941.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399 : 880.13 = 880.13 : x
  2. Step 2: Convert to fraction form
    399/880.13 = 880.13/x
  3. Step 3: Cross multiply
    399x = 880.13 × 880.13
  4. Step 4: Simplify right side
    399x = 774,620.02
  5. Step 5: Solve for x
    x = 774,620.02/399
  6. Step 6: Final answer
    x = 1,941.40

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.