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Finding the Fourth Proportional to 548.79, 757.23 and 338.96

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Solution

The fourth proportional to 548.79, 757.23 and 338.96 is: 467.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.79 : 757.23 = 338.96 : x
  2. Step 2: Convert to fraction form
    548.79/757.23 = 338.96/x
  3. Step 3: Cross multiply
    548.79x = 757.23 × 338.96
  4. Step 4: Simplify right side
    548.79x = 256,671.30
  5. Step 5: Solve for x
    x = 256,671.30/548.79
  6. Step 6: Final answer
    x = 467.71

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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.