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Finding the Fourth Proportional to 481.83, 665.09 and 282.71

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Solution

The fourth proportional to 481.83, 665.09 and 282.71 is: 390.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.83 : 665.09 = 282.71 : x
  2. Step 2: Convert to fraction form
    481.83/665.09 = 282.71/x
  3. Step 3: Cross multiply
    481.83x = 665.09 × 282.71
  4. Step 4: Simplify right side
    481.83x = 188,022.85
  5. Step 5: Solve for x
    x = 188,022.85/481.83
  6. Step 6: Final answer
    x = 390.23

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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.