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Finding the Fourth Proportional to 222.52, 332.12 and 218.92

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Solution

The fourth proportional to 222.52, 332.12 and 218.92 is: 326.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.52 : 332.12 = 218.92 : x
  2. Step 2: Convert to fraction form
    222.52/332.12 = 218.92/x
  3. Step 3: Cross multiply
    222.52x = 332.12 × 218.92
  4. Step 4: Simplify right side
    222.52x = 72,707.71
  5. Step 5: Solve for x
    x = 72,707.71/222.52
  6. Step 6: Final answer
    x = 326.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.