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Finding the Fourth Proportional to 216, 323.43 and 107.50

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Solution

The fourth proportional to 216, 323.43 and 107.50 is: 160.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    216 : 323.43 = 107.50 : x
  2. Step 2: Convert to fraction form
    216/323.43 = 107.50/x
  3. Step 3: Cross multiply
    216x = 323.43 × 107.50
  4. Step 4: Simplify right side
    216x = 34,768.73
  5. Step 5: Solve for x
    x = 34,768.73/216
  6. Step 6: Final answer
    x = 160.97

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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.