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Finding the Third Proportional to 380.46 and 574.80

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Solution

The third proportional to 380.46 and 574.80 is: 868.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.46 : 574.80 = 574.80 : x
  2. Step 2: Convert to fraction form
    380.46/574.80 = 574.80/x
  3. Step 3: Cross multiply
    380.46x = 574.80 × 574.80
  4. Step 4: Simplify right side
    380.46x = 330,400.43
  5. Step 5: Solve for x
    x = 330,400.43/380.46
  6. Step 6: Final answer
    x = 868.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.