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Finding the Fourth Proportional to 547.95, 756.18 and 326.91

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Solution

The fourth proportional to 547.95, 756.18 and 326.91 is: 451.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.95 : 756.18 = 326.91 : x
  2. Step 2: Convert to fraction form
    547.95/756.18 = 326.91/x
  3. Step 3: Cross multiply
    547.95x = 756.18 × 326.91
  4. Step 4: Simplify right side
    547.95x = 247,202.80
  5. Step 5: Solve for x
    x = 247,202.80/547.95
  6. Step 6: Final answer
    x = 451.14

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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.