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Finding the Fourth Proportional to 163.99, 225.98 and 134.39

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Solution

The fourth proportional to 163.99, 225.98 and 134.39 is: 185.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.99 : 225.98 = 134.39 : x
  2. Step 2: Convert to fraction form
    163.99/225.98 = 134.39/x
  3. Step 3: Cross multiply
    163.99x = 225.98 × 134.39
  4. Step 4: Simplify right side
    163.99x = 30,369.85
  5. Step 5: Solve for x
    x = 30,369.85/163.99
  6. Step 6: Final answer
    x = 185.19

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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.