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Finding the Fourth Proportional to 360.82, 540.21 and 326.65

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Solution

The fourth proportional to 360.82, 540.21 and 326.65 is: 489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.82 : 540.21 = 326.65 : x
  2. Step 2: Convert to fraction form
    360.82/540.21 = 326.65/x
  3. Step 3: Cross multiply
    360.82x = 540.21 × 326.65
  4. Step 4: Simplify right side
    360.82x = 176,459.60
  5. Step 5: Solve for x
    x = 176,459.60/360.82
  6. Step 6: Final answer
    x = 489.05

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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.