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Finding the Fourth Proportional to 326.71, 450.92 and 186.91

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Solution

The fourth proportional to 326.71, 450.92 and 186.91 is: 257.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.71 : 450.92 = 186.91 : x
  2. Step 2: Convert to fraction form
    326.71/450.92 = 186.91/x
  3. Step 3: Cross multiply
    326.71x = 450.92 × 186.91
  4. Step 4: Simplify right side
    326.71x = 84,279.75
  5. Step 5: Solve for x
    x = 84,279.75/326.71
  6. Step 6: Final answer
    x = 257.97

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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.