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Finding the Third Proportional to 442 and 479.50

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Solution

The third proportional to 442 and 479.50 is: 520.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    442 : 479.50 = 479.50 : x
  2. Step 2: Convert to fraction form
    442/479.50 = 479.50/x
  3. Step 3: Cross multiply
    442x = 479.50 × 479.50
  4. Step 4: Simplify right side
    442x = 229,920.25
  5. Step 5: Solve for x
    x = 229,920.25/442
  6. Step 6: Final answer
    x = 520.18

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.