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Finding the Fourth Proportional to 548.12, 756.06 and 326.91

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Solution

The fourth proportional to 548.12, 756.06 and 326.91 is: 450.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.12 : 756.06 = 326.91 : x
  2. Step 2: Convert to fraction form
    548.12/756.06 = 326.91/x
  3. Step 3: Cross multiply
    548.12x = 756.06 × 326.91
  4. Step 4: Simplify right side
    548.12x = 247,163.57
  5. Step 5: Solve for x
    x = 247,163.57/548.12
  6. Step 6: Final answer
    x = 450.93

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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.