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Finding the Fourth Proportional to 326.14, 450.13 and 201.91

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Solution

The fourth proportional to 326.14, 450.13 and 201.91 is: 278.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.14 : 450.13 = 201.91 : x
  2. Step 2: Convert to fraction form
    326.14/450.13 = 201.91/x
  3. Step 3: Cross multiply
    326.14x = 450.13 × 201.91
  4. Step 4: Simplify right side
    326.14x = 90,885.75
  5. Step 5: Solve for x
    x = 90,885.75/326.14
  6. Step 6: Final answer
    x = 278.67

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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.