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Finding the Fourth Proportional to 543.72, 814.84 and 254.52

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Solution

The fourth proportional to 543.72, 814.84 and 254.52 is: 381.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.72 : 814.84 = 254.52 : x
  2. Step 2: Convert to fraction form
    543.72/814.84 = 254.52/x
  3. Step 3: Cross multiply
    543.72x = 814.84 × 254.52
  4. Step 4: Simplify right side
    543.72x = 207,393.08
  5. Step 5: Solve for x
    x = 207,393.08/543.72
  6. Step 6: Final answer
    x = 381.43

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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.