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Finding the Fourth Proportional to 219, 303.36 and 213.96

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Solution

The fourth proportional to 219, 303.36 and 213.96 is: 296.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    219 : 303.36 = 213.96 : x
  2. Step 2: Convert to fraction form
    219/303.36 = 213.96/x
  3. Step 3: Cross multiply
    219x = 303.36 × 213.96
  4. Step 4: Simplify right side
    219x = 64,906.91
  5. Step 5: Solve for x
    x = 64,906.91/219
  6. Step 6: Final answer
    x = 296.38

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.