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Finding the Fourth Proportional to 321.19, 481.75 and 101.82

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Solution

The fourth proportional to 321.19, 481.75 and 101.82 is: 152.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.19 : 481.75 = 101.82 : x
  2. Step 2: Convert to fraction form
    321.19/481.75 = 101.82/x
  3. Step 3: Cross multiply
    321.19x = 481.75 × 101.82
  4. Step 4: Simplify right side
    321.19x = 49,050.58
  5. Step 5: Solve for x
    x = 49,050.58/321.19
  6. Step 6: Final answer
    x = 152.71

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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.