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Finding the Fourth Proportional to 321.38, 481.94 and 101.93

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Solution

The fourth proportional to 321.38, 481.94 and 101.93 is: 152.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.38 : 481.94 = 101.93 : x
  2. Step 2: Convert to fraction form
    321.38/481.94 = 101.93/x
  3. Step 3: Cross multiply
    321.38x = 481.94 × 101.93
  4. Step 4: Simplify right side
    321.38x = 49,124.14
  5. Step 5: Solve for x
    x = 49,124.14/321.38
  6. Step 6: Final answer
    x = 152.85

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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.