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Finding the Fourth Proportional to 543.20, 814.78 and 132.33

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Solution

The fourth proportional to 543.20, 814.78 and 132.33 is: 198.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.20 : 814.78 = 132.33 : x
  2. Step 2: Convert to fraction form
    543.20/814.78 = 132.33/x
  3. Step 3: Cross multiply
    543.20x = 814.78 × 132.33
  4. Step 4: Simplify right side
    543.20x = 107,819.51
  5. Step 5: Solve for x
    x = 107,819.51/543.20
  6. Step 6: Final answer
    x = 198.49

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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.