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Finding the Fourth Proportional to 254.60, 381.90 and 92.32

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Solution

The fourth proportional to 254.60, 381.90 and 92.32 is: 138.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.60 : 381.90 = 92.32 : x
  2. Step 2: Convert to fraction form
    254.60/381.90 = 92.32/x
  3. Step 3: Cross multiply
    254.60x = 381.90 × 92.32
  4. Step 4: Simplify right side
    254.60x = 35,257.01
  5. Step 5: Solve for x
    x = 35,257.01/254.60
  6. Step 6: Final answer
    x = 138.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.