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Finding the Fourth Proportional to 326.61, 450.36 and 202.23

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Solution

The fourth proportional to 326.61, 450.36 and 202.23 is: 278.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.61 : 450.36 = 202.23 : x
  2. Step 2: Convert to fraction form
    326.61/450.36 = 202.23/x
  3. Step 3: Cross multiply
    326.61x = 450.36 × 202.23
  4. Step 4: Simplify right side
    326.61x = 91,076.30
  5. Step 5: Solve for x
    x = 91,076.30/326.61
  6. Step 6: Final answer
    x = 278.85

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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.