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Finding the Third Proportional to 246.38 and 438.19

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Solution

The third proportional to 246.38 and 438.19 is: 779.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    246.38 : 438.19 = 438.19 : x
  2. Step 2: Convert to fraction form
    246.38/438.19 = 438.19/x
  3. Step 3: Cross multiply
    246.38x = 438.19 × 438.19
  4. Step 4: Simplify right side
    246.38x = 192,008.29
  5. Step 5: Solve for x
    x = 192,008.29/246.38
  6. Step 6: Final answer
    x = 779.33

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.