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Finding the Fourth Proportional to 548.46, 825.86 and 451.87

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Solution

The fourth proportional to 548.46, 825.86 and 451.87 is: 680.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.46 : 825.86 = 451.87 : x
  2. Step 2: Convert to fraction form
    548.46/825.86 = 451.87/x
  3. Step 3: Cross multiply
    548.46x = 825.86 × 451.87
  4. Step 4: Simplify right side
    548.46x = 373,174.97
  5. Step 5: Solve for x
    x = 373,174.97/548.46
  6. Step 6: Final answer
    x = 680.41

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.