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Finding the Fourth Proportional to 326.08, 449.84 and 222.72

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Solution

The fourth proportional to 326.08, 449.84 and 222.72 is: 307.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.08 : 449.84 = 222.72 : x
  2. Step 2: Convert to fraction form
    326.08/449.84 = 222.72/x
  3. Step 3: Cross multiply
    326.08x = 449.84 × 222.72
  4. Step 4: Simplify right side
    326.08x = 100,188.36
  5. Step 5: Solve for x
    x = 100,188.36/326.08
  6. Step 6: Final answer
    x = 307.25

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Why These Related Problems?

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