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Finding the Fourth Proportional to 119.48, 179.21 and 32.81

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Solution

The fourth proportional to 119.48, 179.21 and 32.81 is: 49.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.48 : 179.21 = 32.81 : x
  2. Step 2: Convert to fraction form
    119.48/179.21 = 32.81/x
  3. Step 3: Cross multiply
    119.48x = 179.21 × 32.81
  4. Step 4: Simplify right side
    119.48x = 5,879.88
  5. Step 5: Solve for x
    x = 5,879.88/119.48
  6. Step 6: Final answer
    x = 49.21

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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.