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Finding the Fourth Proportional to 543, 814.70 and 326.73

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Solution

The fourth proportional to 543, 814.70 and 326.73 is: 490.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    543 : 814.70 = 326.73 : x
  2. Step 2: Convert to fraction form
    543/814.70 = 326.73/x
  3. Step 3: Cross multiply
    543x = 814.70 × 326.73
  4. Step 4: Simplify right side
    543x = 266,186.93
  5. Step 5: Solve for x
    x = 266,186.93/543
  6. Step 6: Final answer
    x = 490.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.