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Finding the Fourth Proportional to 227.57, 315.65 and 219.36

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Solution

The fourth proportional to 227.57, 315.65 and 219.36 is: 304.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.57 : 315.65 = 219.36 : x
  2. Step 2: Convert to fraction form
    227.57/315.65 = 219.36/x
  3. Step 3: Cross multiply
    227.57x = 315.65 × 219.36
  4. Step 4: Simplify right side
    227.57x = 69,242.72
  5. Step 5: Solve for x
    x = 69,242.72/227.57
  6. Step 6: Final answer
    x = 304.28

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.