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Finding the Fourth Proportional to 546.80, 818.87 and 272.52

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Solution

The fourth proportional to 546.80, 818.87 and 272.52 is: 408.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.80 : 818.87 = 272.52 : x
  2. Step 2: Convert to fraction form
    546.80/818.87 = 272.52/x
  3. Step 3: Cross multiply
    546.80x = 818.87 × 272.52
  4. Step 4: Simplify right side
    546.80x = 223,157.09
  5. Step 5: Solve for x
    x = 223,157.09/546.80
  6. Step 6: Final answer
    x = 408.12

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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.