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Finding the Fourth Proportional to 547.81, 755.99 and 326.99

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Solution

The fourth proportional to 547.81, 755.99 and 326.99 is: 451.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.81 : 755.99 = 326.99 : x
  2. Step 2: Convert to fraction form
    547.81/755.99 = 326.99/x
  3. Step 3: Cross multiply
    547.81x = 755.99 × 326.99
  4. Step 4: Simplify right side
    547.81x = 247,201.17
  5. Step 5: Solve for x
    x = 247,201.17/547.81
  6. Step 6: Final answer
    x = 451.25

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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.