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Finding the Fourth Proportional to 546.27, 818.94 and 443.30

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Solution

The fourth proportional to 546.27, 818.94 and 443.30 is: 664.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.27 : 818.94 = 443.30 : x
  2. Step 2: Convert to fraction form
    546.27/818.94 = 443.30/x
  3. Step 3: Cross multiply
    546.27x = 818.94 × 443.30
  4. Step 4: Simplify right side
    546.27x = 363,032.01
  5. Step 5: Solve for x
    x = 363,032.01/546.27
  6. Step 6: Final answer
    x = 664.57

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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.