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Finding the Fourth Proportional to 548.61, 757.11 and 349.48

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Solution

The fourth proportional to 548.61, 757.11 and 349.48 is: 482.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.61 : 757.11 = 349.48 : x
  2. Step 2: Convert to fraction form
    548.61/757.11 = 349.48/x
  3. Step 3: Cross multiply
    548.61x = 757.11 × 349.48
  4. Step 4: Simplify right side
    548.61x = 264,594.80
  5. Step 5: Solve for x
    x = 264,594.80/548.61
  6. Step 6: Final answer
    x = 482.30

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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.