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Finding the Fourth Proportional to 456.23, 684.41 and 326.22

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Solution

The fourth proportional to 456.23, 684.41 and 326.22 is: 489.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.23 : 684.41 = 326.22 : x
  2. Step 2: Convert to fraction form
    456.23/684.41 = 326.22/x
  3. Step 3: Cross multiply
    456.23x = 684.41 × 326.22
  4. Step 4: Simplify right side
    456.23x = 223,266.60
  5. Step 5: Solve for x
    x = 223,266.60/456.23
  6. Step 6: Final answer
    x = 489.38

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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.