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Finding the Fourth Proportional to 322.90, 483.94 and 168.74

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Solution

The fourth proportional to 322.90, 483.94 and 168.74 is: 252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.90 : 483.94 = 168.74 : x
  2. Step 2: Convert to fraction form
    322.90/483.94 = 168.74/x
  3. Step 3: Cross multiply
    322.90x = 483.94 × 168.74
  4. Step 4: Simplify right side
    322.90x = 81,660.04
  5. Step 5: Solve for x
    x = 81,660.04/322.90
  6. Step 6: Final answer
    x = 252.90

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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.