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Finding the Fourth Proportional to 326.45, 450.49 and 193.70

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Solution

The fourth proportional to 326.45, 450.49 and 193.70 is: 267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.45 : 450.49 = 193.70 : x
  2. Step 2: Convert to fraction form
    326.45/450.49 = 193.70/x
  3. Step 3: Cross multiply
    326.45x = 450.49 × 193.70
  4. Step 4: Simplify right side
    326.45x = 87,259.91
  5. Step 5: Solve for x
    x = 87,259.91/326.45
  6. Step 6: Final answer
    x = 267.30

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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.