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Finding the Third Proportional to 387.28 and 604.97

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Solution

The third proportional to 387.28 and 604.97 is: 945.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.28 : 604.97 = 604.97 : x
  2. Step 2: Convert to fraction form
    387.28/604.97 = 604.97/x
  3. Step 3: Cross multiply
    387.28x = 604.97 × 604.97
  4. Step 4: Simplify right side
    387.28x = 365,987.19
  5. Step 5: Solve for x
    x = 365,987.19/387.28
  6. Step 6: Final answer
    x = 945.02

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.