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Finding the Third Proportional to 392.13 and 852.13

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Solution

The third proportional to 392.13 and 852.13 is: 1,851.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.13 : 852.13 = 852.13 : x
  2. Step 2: Convert to fraction form
    392.13/852.13 = 852.13/x
  3. Step 3: Cross multiply
    392.13x = 852.13 × 852.13
  4. Step 4: Simplify right side
    392.13x = 726,117.02
  5. Step 5: Solve for x
    x = 726,117.02/392.13
  6. Step 6: Final answer
    x = 1,851.75

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.