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Finding the Fourth Proportional to 326.45, 450.28 and 201.95

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Solution

The fourth proportional to 326.45, 450.28 and 201.95 is: 278.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.45 : 450.28 = 201.95 : x
  2. Step 2: Convert to fraction form
    326.45/450.28 = 201.95/x
  3. Step 3: Cross multiply
    326.45x = 450.28 × 201.95
  4. Step 4: Simplify right side
    326.45x = 90,934.05
  5. Step 5: Solve for x
    x = 90,934.05/326.45
  6. Step 6: Final answer
    x = 278.55

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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.