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Finding the Fourth Proportional to 349.30, 481.89 and 218.22

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Solution

The fourth proportional to 349.30, 481.89 and 218.22 is: 301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.30 : 481.89 = 218.22 : x
  2. Step 2: Convert to fraction form
    349.30/481.89 = 218.22/x
  3. Step 3: Cross multiply
    349.30x = 481.89 × 218.22
  4. Step 4: Simplify right side
    349.30x = 105,158.04
  5. Step 5: Solve for x
    x = 105,158.04/349.30
  6. Step 6: Final answer
    x = 301.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.