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Finding the Fourth Proportional to 228.27, 339.93 and 222.60

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Solution

The fourth proportional to 228.27, 339.93 and 222.60 is: 331.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.27 : 339.93 = 222.60 : x
  2. Step 2: Convert to fraction form
    228.27/339.93 = 222.60/x
  3. Step 3: Cross multiply
    228.27x = 339.93 × 222.60
  4. Step 4: Simplify right side
    228.27x = 75,668.42
  5. Step 5: Solve for x
    x = 75,668.42/228.27
  6. Step 6: Final answer
    x = 331.49

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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.