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Finding the Fourth Proportional to 376.06, 517.69 and 326.66

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Solution

The fourth proportional to 376.06, 517.69 and 326.66 is: 449.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.06 : 517.69 = 326.66 : x
  2. Step 2: Convert to fraction form
    376.06/517.69 = 326.66/x
  3. Step 3: Cross multiply
    376.06x = 517.69 × 326.66
  4. Step 4: Simplify right side
    376.06x = 169,108.62
  5. Step 5: Solve for x
    x = 169,108.62/376.06
  6. Step 6: Final answer
    x = 449.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.