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Finding the Fourth Proportional to 228.52, 341.12 and 211.60

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Solution

The fourth proportional to 228.52, 341.12 and 211.60 is: 315.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.52 : 341.12 = 211.60 : x
  2. Step 2: Convert to fraction form
    228.52/341.12 = 211.60/x
  3. Step 3: Cross multiply
    228.52x = 341.12 × 211.60
  4. Step 4: Simplify right side
    228.52x = 72,179.08
  5. Step 5: Solve for x
    x = 72,179.08/228.52
  6. Step 6: Final answer
    x = 315.86

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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.