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Finding the Fourth Proportional to 184.51, 254.44 and 122.38

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Solution

The fourth proportional to 184.51, 254.44 and 122.38 is: 168.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.51 : 254.44 = 122.38 : x
  2. Step 2: Convert to fraction form
    184.51/254.44 = 122.38/x
  3. Step 3: Cross multiply
    184.51x = 254.44 × 122.38
  4. Step 4: Simplify right side
    184.51x = 31,137.88
  5. Step 5: Solve for x
    x = 31,137.88/184.51
  6. Step 6: Final answer
    x = 168.76

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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.