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Finding the Fourth Proportional to 329.34, 493.62 and 112.74

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Solution

The fourth proportional to 329.34, 493.62 and 112.74 is: 168.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.34 : 493.62 = 112.74 : x
  2. Step 2: Convert to fraction form
    329.34/493.62 = 112.74/x
  3. Step 3: Cross multiply
    329.34x = 493.62 × 112.74
  4. Step 4: Simplify right side
    329.34x = 55,650.72
  5. Step 5: Solve for x
    x = 55,650.72/329.34
  6. Step 6: Final answer
    x = 168.98

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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.