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Finding the Fourth Proportional to 218.08, 326.21 and 179.12

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Solution

The fourth proportional to 218.08, 326.21 and 179.12 is: 267.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.08 : 326.21 = 179.12 : x
  2. Step 2: Convert to fraction form
    218.08/326.21 = 179.12/x
  3. Step 3: Cross multiply
    218.08x = 326.21 × 179.12
  4. Step 4: Simplify right side
    218.08x = 58,430.74
  5. Step 5: Solve for x
    x = 58,430.74/218.08
  6. Step 6: Final answer
    x = 267.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.