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Finding the Fourth Proportional to 163.32, 244.08 and 122.28

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Solution

The fourth proportional to 163.32, 244.08 and 122.28 is: 182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.32 : 244.08 = 122.28 : x
  2. Step 2: Convert to fraction form
    163.32/244.08 = 122.28/x
  3. Step 3: Cross multiply
    163.32x = 244.08 × 122.28
  4. Step 4: Simplify right side
    163.32x = 29,846.10
  5. Step 5: Solve for x
    x = 29,846.10/163.32
  6. Step 6: Final answer
    x = 182.75

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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.