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Finding the Fourth Proportional to 327.58, 451.91 and 189.50

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Solution

The fourth proportional to 327.58, 451.91 and 189.50 is: 261.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.58 : 451.91 = 189.50 : x
  2. Step 2: Convert to fraction form
    327.58/451.91 = 189.50/x
  3. Step 3: Cross multiply
    327.58x = 451.91 × 189.50
  4. Step 4: Simplify right side
    327.58x = 85,636.95
  5. Step 5: Solve for x
    x = 85,636.95/327.58
  6. Step 6: Final answer
    x = 261.42

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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.