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Finding the Fourth Proportional to 163.18, 224.49 and 144.41

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Solution

The fourth proportional to 163.18, 224.49 and 144.41 is: 198.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.18 : 224.49 = 144.41 : x
  2. Step 2: Convert to fraction form
    163.18/224.49 = 144.41/x
  3. Step 3: Cross multiply
    163.18x = 224.49 × 144.41
  4. Step 4: Simplify right side
    163.18x = 32,418.60
  5. Step 5: Solve for x
    x = 32,418.60/163.18
  6. Step 6: Final answer
    x = 198.67

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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.