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Finding the Fourth Proportional to 184.31, 254.37 and 105.63

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Solution

The fourth proportional to 184.31, 254.37 and 105.63 is: 145.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.31 : 254.37 = 105.63 : x
  2. Step 2: Convert to fraction form
    184.31/254.37 = 105.63/x
  3. Step 3: Cross multiply
    184.31x = 254.37 × 105.63
  4. Step 4: Simplify right side
    184.31x = 26,869.10
  5. Step 5: Solve for x
    x = 26,869.10/184.31
  6. Step 6: Final answer
    x = 145.78

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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.