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Finding the Fourth Proportional to 381.96, 526.94 and 254.24

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Solution

The fourth proportional to 381.96, 526.94 and 254.24 is: 350.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.96 : 526.94 = 254.24 : x
  2. Step 2: Convert to fraction form
    381.96/526.94 = 254.24/x
  3. Step 3: Cross multiply
    381.96x = 526.94 × 254.24
  4. Step 4: Simplify right side
    381.96x = 133,969.23
  5. Step 5: Solve for x
    x = 133,969.23/381.96
  6. Step 6: Final answer
    x = 350.74

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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.