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Finding the Fourth Proportional to 228.16, 339.71 and 225.73

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Solution

The fourth proportional to 228.16, 339.71 and 225.73 is: 336.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.16 : 339.71 = 225.73 : x
  2. Step 2: Convert to fraction form
    228.16/339.71 = 225.73/x
  3. Step 3: Cross multiply
    228.16x = 339.71 × 225.73
  4. Step 4: Simplify right side
    228.16x = 76,682.74
  5. Step 5: Solve for x
    x = 76,682.74/228.16
  6. Step 6: Final answer
    x = 336.09

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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.