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Finding the Fourth Proportional to 220.96, 329.82 and 192.28

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Solution

The fourth proportional to 220.96, 329.82 and 192.28 is: 287.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.96 : 329.82 = 192.28 : x
  2. Step 2: Convert to fraction form
    220.96/329.82 = 192.28/x
  3. Step 3: Cross multiply
    220.96x = 329.82 × 192.28
  4. Step 4: Simplify right side
    220.96x = 63,417.79
  5. Step 5: Solve for x
    x = 63,417.79/220.96
  6. Step 6: Final answer
    x = 287.01

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.