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Finding the Fourth Proportional to 254.92, 381.59 and 181.57

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Solution

The fourth proportional to 254.92, 381.59 and 181.57 is: 271.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.92 : 381.59 = 181.57 : x
  2. Step 2: Convert to fraction form
    254.92/381.59 = 181.57/x
  3. Step 3: Cross multiply
    254.92x = 381.59 × 181.57
  4. Step 4: Simplify right side
    254.92x = 69,283.25
  5. Step 5: Solve for x
    x = 69,283.25/254.92
  6. Step 6: Final answer
    x = 271.78

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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.