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Finding the Fourth Proportional to 163.72, 244.27 and 156

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Solution

The fourth proportional to 163.72, 244.27 and 156 is: 232.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.72 : 244.27 = 156 : x
  2. Step 2: Convert to fraction form
    163.72/244.27 = 156/x
  3. Step 3: Cross multiply
    163.72x = 244.27 × 156
  4. Step 4: Simplify right side
    163.72x = 38,106.12
  5. Step 5: Solve for x
    x = 38,106.12/163.72
  6. Step 6: Final answer
    x = 232.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.