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Finding the Fourth Proportional to 481.88, 665.00 and 274.88

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Solution

The fourth proportional to 481.88, 665.00 and 274.88 is: 379.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.88 : 665.00 = 274.88 : x
  2. Step 2: Convert to fraction form
    481.88/665.00 = 274.88/x
  3. Step 3: Cross multiply
    481.88x = 665.00 × 274.88
  4. Step 4: Simplify right side
    481.88x = 182,790.50
  5. Step 5: Solve for x
    x = 182,790.50/481.88
  6. Step 6: Final answer
    x = 379.33

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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.