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Finding the Fourth Proportional to 326.62, 489.91 and 110.19

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Solution

The fourth proportional to 326.62, 489.91 and 110.19 is: 165.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.62 : 489.91 = 110.19 : x
  2. Step 2: Convert to fraction form
    326.62/489.91 = 110.19/x
  3. Step 3: Cross multiply
    326.62x = 489.91 × 110.19
  4. Step 4: Simplify right side
    326.62x = 53,983.18
  5. Step 5: Solve for x
    x = 53,983.18/326.62
  6. Step 6: Final answer
    x = 165.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.