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Finding the Third Proportional to 210.94 and 316.41

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Solution

The third proportional to 210.94 and 316.41 is: 474.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.94 : 316.41 = 316.41 : x
  2. Step 2: Convert to fraction form
    210.94/316.41 = 316.41/x
  3. Step 3: Cross multiply
    210.94x = 316.41 × 316.41
  4. Step 4: Simplify right side
    210.94x = 100,112.92
  5. Step 5: Solve for x
    x = 100,112.92/210.94
  6. Step 6: Final answer
    x = 474.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.