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Finding the Fourth Proportional to 239.83, 329.04 and 228.22

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Solution

The fourth proportional to 239.83, 329.04 and 228.22 is: 313.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.83 : 329.04 = 228.22 : x
  2. Step 2: Convert to fraction form
    239.83/329.04 = 228.22/x
  3. Step 3: Cross multiply
    239.83x = 329.04 × 228.22
  4. Step 4: Simplify right side
    239.83x = 75,092.69
  5. Step 5: Solve for x
    x = 75,092.69/239.83
  6. Step 6: Final answer
    x = 313.11

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.