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Finding the Third Proportional to 304.38 and 458.79

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Solution

The third proportional to 304.38 and 458.79 is: 691.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.38 : 458.79 = 458.79 : x
  2. Step 2: Convert to fraction form
    304.38/458.79 = 458.79/x
  3. Step 3: Cross multiply
    304.38x = 458.79 × 458.79
  4. Step 4: Simplify right side
    304.38x = 210,487.40
  5. Step 5: Solve for x
    x = 210,487.40/304.38
  6. Step 6: Final answer
    x = 691.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.