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Finding the Fourth Proportional to 322.25, 482.45 and 167.81

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Solution

The fourth proportional to 322.25, 482.45 and 167.81 is: 251.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.25 : 482.45 = 167.81 : x
  2. Step 2: Convert to fraction form
    322.25/482.45 = 167.81/x
  3. Step 3: Cross multiply
    322.25x = 482.45 × 167.81
  4. Step 4: Simplify right side
    322.25x = 80,956.68
  5. Step 5: Solve for x
    x = 80,956.68/322.25
  6. Step 6: Final answer
    x = 251.23

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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.