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Finding the Fourth Proportional to 254.66, 381.79 and 110.48

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Solution

The fourth proportional to 254.66, 381.79 and 110.48 is: 165.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.66 : 381.79 = 110.48 : x
  2. Step 2: Convert to fraction form
    254.66/381.79 = 110.48/x
  3. Step 3: Cross multiply
    254.66x = 381.79 × 110.48
  4. Step 4: Simplify right side
    254.66x = 42,179.61
  5. Step 5: Solve for x
    x = 42,179.61/254.66
  6. Step 6: Final answer
    x = 165.63

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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.