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Finding the Fourth Proportional to 548.05, 756.29 and 326.95

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Solution

The fourth proportional to 548.05, 756.29 and 326.95 is: 451.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.05 : 756.29 = 326.95 : x
  2. Step 2: Convert to fraction form
    548.05/756.29 = 326.95/x
  3. Step 3: Cross multiply
    548.05x = 756.29 × 326.95
  4. Step 4: Simplify right side
    548.05x = 247,273.34
  5. Step 5: Solve for x
    x = 247,273.34/548.05
  6. Step 6: Final answer
    x = 451.19

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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.