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Finding the Fourth Proportional to 411.23, 617.04 and 167.82

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Solution

The fourth proportional to 411.23, 617.04 and 167.82 is: 251.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.23 : 617.04 = 167.82 : x
  2. Step 2: Convert to fraction form
    411.23/617.04 = 167.82/x
  3. Step 3: Cross multiply
    411.23x = 617.04 × 167.82
  4. Step 4: Simplify right side
    411.23x = 103,551.65
  5. Step 5: Solve for x
    x = 103,551.65/411.23
  6. Step 6: Final answer
    x = 251.81

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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.