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Finding the Fourth Proportional to 229.08, 315.96 and 225.48

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Solution

The fourth proportional to 229.08, 315.96 and 225.48 is: 310.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.08 : 315.96 = 225.48 : x
  2. Step 2: Convert to fraction form
    229.08/315.96 = 225.48/x
  3. Step 3: Cross multiply
    229.08x = 315.96 × 225.48
  4. Step 4: Simplify right side
    229.08x = 71,242.66
  5. Step 5: Solve for x
    x = 71,242.66/229.08
  6. Step 6: Final answer
    x = 310.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.