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Finding the Fourth Proportional to 547.72, 755.75 and 326.66

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Solution

The fourth proportional to 547.72, 755.75 and 326.66 is: 450.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.72 : 755.75 = 326.66 : x
  2. Step 2: Convert to fraction form
    547.72/755.75 = 326.66/x
  3. Step 3: Cross multiply
    547.72x = 755.75 × 326.66
  4. Step 4: Simplify right side
    547.72x = 246,876.00
  5. Step 5: Solve for x
    x = 246,876.00/547.72
  6. Step 6: Final answer
    x = 450.74

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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.