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Finding the Third Proportional to 258.28 and 344.06

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Solution

The third proportional to 258.28 and 344.06 is: 458.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.28 : 344.06 = 344.06 : x
  2. Step 2: Convert to fraction form
    258.28/344.06 = 344.06/x
  3. Step 3: Cross multiply
    258.28x = 344.06 × 344.06
  4. Step 4: Simplify right side
    258.28x = 118,379.00
  5. Step 5: Solve for x
    x = 118,379.00/258.28
  6. Step 6: Final answer
    x = 458.33

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.