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Finding the Fourth Proportional to 548.89, 756.04 and 422.62

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Solution

The fourth proportional to 548.89, 756.04 and 422.62 is: 582.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.89 : 756.04 = 422.62 : x
  2. Step 2: Convert to fraction form
    548.89/756.04 = 422.62/x
  3. Step 3: Cross multiply
    548.89x = 756.04 × 422.62
  4. Step 4: Simplify right side
    548.89x = 319,517.62
  5. Step 5: Solve for x
    x = 319,517.62/548.89
  6. Step 6: Final answer
    x = 582.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.