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Finding the Fourth Proportional to 184.64, 254.42 and 137.86

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Solution

The fourth proportional to 184.64, 254.42 and 137.86 is: 189.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.64 : 254.42 = 137.86 : x
  2. Step 2: Convert to fraction form
    184.64/254.42 = 137.86/x
  3. Step 3: Cross multiply
    184.64x = 254.42 × 137.86
  4. Step 4: Simplify right side
    184.64x = 35,074.34
  5. Step 5: Solve for x
    x = 35,074.34/184.64
  6. Step 6: Final answer
    x = 189.96

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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.