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Finding the Fourth Proportional to 329.77, 494.34 and 199.54

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Solution

The fourth proportional to 329.77, 494.34 and 199.54 is: 299.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.77 : 494.34 = 199.54 : x
  2. Step 2: Convert to fraction form
    329.77/494.34 = 199.54/x
  3. Step 3: Cross multiply
    329.77x = 494.34 × 199.54
  4. Step 4: Simplify right side
    329.77x = 98,640.60
  5. Step 5: Solve for x
    x = 98,640.60/329.77
  6. Step 6: Final answer
    x = 299.12

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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.