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Finding the Third Proportional to 180.70 and 394.13

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Solution

The third proportional to 180.70 and 394.13 is: 859.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.70 : 394.13 = 394.13 : x
  2. Step 2: Convert to fraction form
    180.70/394.13 = 394.13/x
  3. Step 3: Cross multiply
    180.70x = 394.13 × 394.13
  4. Step 4: Simplify right side
    180.70x = 155,334.52
  5. Step 5: Solve for x
    x = 155,334.52/180.70
  6. Step 6: Final answer
    x = 859.61

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.