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Finding the Fourth Proportional to 547.95, 756.15 and 326.90

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Solution

The fourth proportional to 547.95, 756.15 and 326.90 is: 451.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.95 : 756.15 = 326.90 : x
  2. Step 2: Convert to fraction form
    547.95/756.15 = 326.90/x
  3. Step 3: Cross multiply
    547.95x = 756.15 × 326.90
  4. Step 4: Simplify right side
    547.95x = 247,185.44
  5. Step 5: Solve for x
    x = 247,185.44/547.95
  6. Step 6: Final answer
    x = 451.11

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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.