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Finding the Fourth Proportional to 229.11, 315.86 and 163.50

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Solution

The fourth proportional to 229.11, 315.86 and 163.50 is: 225.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.11 : 315.86 = 163.50 : x
  2. Step 2: Convert to fraction form
    229.11/315.86 = 163.50/x
  3. Step 3: Cross multiply
    229.11x = 315.86 × 163.50
  4. Step 4: Simplify right side
    229.11x = 51,643.11
  5. Step 5: Solve for x
    x = 51,643.11/229.11
  6. Step 6: Final answer
    x = 225.41

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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.