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Finding the Third Proportional to 245.25 and 379.88

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Solution

The third proportional to 245.25 and 379.88 is: 588.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.25 : 379.88 = 379.88 : x
  2. Step 2: Convert to fraction form
    245.25/379.88 = 379.88/x
  3. Step 3: Cross multiply
    245.25x = 379.88 × 379.88
  4. Step 4: Simplify right side
    245.25x = 144,305.02
  5. Step 5: Solve for x
    x = 144,305.02/245.25
  6. Step 6: Final answer
    x = 588.40

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.