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Finding the Fourth Proportional to 329.16, 493.02 and 220.44

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Solution

The fourth proportional to 329.16, 493.02 and 220.44 is: 330.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.16 : 493.02 = 220.44 : x
  2. Step 2: Convert to fraction form
    329.16/493.02 = 220.44/x
  3. Step 3: Cross multiply
    329.16x = 493.02 × 220.44
  4. Step 4: Simplify right side
    329.16x = 108,681.33
  5. Step 5: Solve for x
    x = 108,681.33/329.16
  6. Step 6: Final answer
    x = 330.18

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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.