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Finding the Third Proportional to 143.38 and 218.94

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Solution

The third proportional to 143.38 and 218.94 is: 334.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.38 : 218.94 = 218.94 : x
  2. Step 2: Convert to fraction form
    143.38/218.94 = 218.94/x
  3. Step 3: Cross multiply
    143.38x = 218.94 × 218.94
  4. Step 4: Simplify right side
    143.38x = 47,933.63
  5. Step 5: Solve for x
    x = 47,933.63/143.38
  6. Step 6: Final answer
    x = 334.32

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.