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Finding the Fourth Proportional to 324.71, 486.39 and 276.18

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Solution

The fourth proportional to 324.71, 486.39 and 276.18 is: 413.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.71 : 486.39 = 276.18 : x
  2. Step 2: Convert to fraction form
    324.71/486.39 = 276.18/x
  3. Step 3: Cross multiply
    324.71x = 486.39 × 276.18
  4. Step 4: Simplify right side
    324.71x = 134,328.85
  5. Step 5: Solve for x
    x = 134,328.85/324.71
  6. Step 6: Final answer
    x = 413.69

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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.