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Finding the Third Proportional to 353.91 and 404.53

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Solution

The third proportional to 353.91 and 404.53 is: 462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.91 : 404.53 = 404.53 : x
  2. Step 2: Convert to fraction form
    353.91/404.53 = 404.53/x
  3. Step 3: Cross multiply
    353.91x = 404.53 × 404.53
  4. Step 4: Simplify right side
    353.91x = 163,645.53
  5. Step 5: Solve for x
    x = 163,645.53/353.91
  6. Step 6: Final answer
    x = 462.40

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.