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Finding the Third Proportional to 212.63 and 330.33

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Solution

The third proportional to 212.63 and 330.33 is: 513.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.63 : 330.33 = 330.33 : x
  2. Step 2: Convert to fraction form
    212.63/330.33 = 330.33/x
  3. Step 3: Cross multiply
    212.63x = 330.33 × 330.33
  4. Step 4: Simplify right side
    212.63x = 109,116.67
  5. Step 5: Solve for x
    x = 109,116.67/212.63
  6. Step 6: Final answer
    x = 513.19

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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.