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Finding the Fourth Proportional to 456.22, 684.04 and 163.66

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Solution

The fourth proportional to 456.22, 684.04 and 163.66 is: 245.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.22 : 684.04 = 163.66 : x
  2. Step 2: Convert to fraction form
    456.22/684.04 = 163.66/x
  3. Step 3: Cross multiply
    456.22x = 684.04 × 163.66
  4. Step 4: Simplify right side
    456.22x = 111,949.99
  5. Step 5: Solve for x
    x = 111,949.99/456.22
  6. Step 6: Final answer
    x = 245.39

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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.