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Finding the Fourth Proportional to 547.31, 755.34 and 326.26

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Solution

The fourth proportional to 547.31, 755.34 and 326.26 is: 450.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    547.31 : 755.34 = 326.26 : x
  2. Step 2: Convert to fraction form
    547.31/755.34 = 326.26/x
  3. Step 3: Cross multiply
    547.31x = 755.34 × 326.26
  4. Step 4: Simplify right side
    547.31x = 246,433.45
  5. Step 5: Solve for x
    x = 246,433.45/547.31
  6. Step 6: Final answer
    x = 450.27

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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.