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Finding the Fourth Proportional to 326.92, 447.84 and 314.62

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Solution

The fourth proportional to 326.92, 447.84 and 314.62 is: 430.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.92 : 447.84 = 314.62 : x
  2. Step 2: Convert to fraction form
    326.92/447.84 = 314.62/x
  3. Step 3: Cross multiply
    326.92x = 447.84 × 314.62
  4. Step 4: Simplify right side
    326.92x = 140,899.42
  5. Step 5: Solve for x
    x = 140,899.42/326.92
  6. Step 6: Final answer
    x = 430.99

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.