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Finding the Fourth Proportional to 546.36, 818.10 and 422.43

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Solution

The fourth proportional to 546.36, 818.10 and 422.43 is: 632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.36 : 818.10 = 422.43 : x
  2. Step 2: Convert to fraction form
    546.36/818.10 = 422.43/x
  3. Step 3: Cross multiply
    546.36x = 818.10 × 422.43
  4. Step 4: Simplify right side
    546.36x = 345,589.98
  5. Step 5: Solve for x
    x = 345,589.98/546.36
  6. Step 6: Final answer
    x = 632.53

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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.