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Finding the Fourth Proportional to 322.82, 484.48 and 137.83

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Solution

The fourth proportional to 322.82, 484.48 and 137.83 is: 206.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.82 : 484.48 = 137.83 : x
  2. Step 2: Convert to fraction form
    322.82/484.48 = 137.83/x
  3. Step 3: Cross multiply
    322.82x = 484.48 × 137.83
  4. Step 4: Simplify right side
    322.82x = 66,775.88
  5. Step 5: Solve for x
    x = 66,775.88/322.82
  6. Step 6: Final answer
    x = 206.85

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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.