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Finding the Fourth Proportional to 548.62, 755.79 and 459.79

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Solution

The fourth proportional to 548.62, 755.79 and 459.79 is: 633.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.62 : 755.79 = 459.79 : x
  2. Step 2: Convert to fraction form
    548.62/755.79 = 459.79/x
  3. Step 3: Cross multiply
    548.62x = 755.79 × 459.79
  4. Step 4: Simplify right side
    548.62x = 347,504.68
  5. Step 5: Solve for x
    x = 347,504.68/548.62
  6. Step 6: Final answer
    x = 633.42

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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.