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Finding the Fourth Proportional to 547.61, 755.60 and 326.66

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Solution

The fourth proportional to 547.61, 755.60 and 326.66 is: 450.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.61 : 755.60 = 326.66 : x
  2. Step 2: Convert to fraction form
    547.61/755.60 = 326.66/x
  3. Step 3: Cross multiply
    547.61x = 755.60 × 326.66
  4. Step 4: Simplify right side
    547.61x = 246,818.88
  5. Step 5: Solve for x
    x = 246,818.88/547.61
  6. Step 6: Final answer
    x = 450.72

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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.