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Finding the Third Proportional to 356.06 and 479.04

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Solution

The third proportional to 356.06 and 479.04 is: 644.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.06 : 479.04 = 479.04 : x
  2. Step 2: Convert to fraction form
    356.06/479.04 = 479.04/x
  3. Step 3: Cross multiply
    356.06x = 479.04 × 479.04
  4. Step 4: Simplify right side
    356.06x = 229,478.42
  5. Step 5: Solve for x
    x = 229,478.42/356.06
  6. Step 6: Final answer
    x = 644.49

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.