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Finding the Fourth Proportional to 218.41, 326.90 and 160.62

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Solution

The fourth proportional to 218.41, 326.90 and 160.62 is: 240.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.41 : 326.90 = 160.62 : x
  2. Step 2: Convert to fraction form
    218.41/326.90 = 160.62/x
  3. Step 3: Cross multiply
    218.41x = 326.90 × 160.62
  4. Step 4: Simplify right side
    218.41x = 52,505.85
  5. Step 5: Solve for x
    x = 52,505.85/218.41
  6. Step 6: Final answer
    x = 240.40

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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.