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Finding the Fourth Proportional to 329.11, 493.34 and 123.54

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Solution

The fourth proportional to 329.11, 493.34 and 123.54 is: 185.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.11 : 493.34 = 123.54 : x
  2. Step 2: Convert to fraction form
    329.11/493.34 = 123.54/x
  3. Step 3: Cross multiply
    329.11x = 493.34 × 123.54
  4. Step 4: Simplify right side
    329.11x = 60,944.76
  5. Step 5: Solve for x
    x = 60,944.76/329.11
  6. Step 6: Final answer
    x = 185.18

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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.