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Finding the Fourth Proportional to 163.44, 225.54 and 101.25

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Solution

The fourth proportional to 163.44, 225.54 and 101.25 is: 139.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.44 : 225.54 = 101.25 : x
  2. Step 2: Convert to fraction form
    163.44/225.54 = 101.25/x
  3. Step 3: Cross multiply
    163.44x = 225.54 × 101.25
  4. Step 4: Simplify right side
    163.44x = 22,835.93
  5. Step 5: Solve for x
    x = 22,835.93/163.44
  6. Step 6: Final answer
    x = 139.72

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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.