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Finding the Fourth Proportional to 184.38, 254.31 and 126.18

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Solution

The fourth proportional to 184.38, 254.31 and 126.18 is: 174.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.38 : 254.31 = 126.18 : x
  2. Step 2: Convert to fraction form
    184.38/254.31 = 126.18/x
  3. Step 3: Cross multiply
    184.38x = 254.31 × 126.18
  4. Step 4: Simplify right side
    184.38x = 32,088.84
  5. Step 5: Solve for x
    x = 32,088.84/184.38
  6. Step 6: Final answer
    x = 174.04

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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.