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Finding the Fourth Proportional to 481.11, 663.93 and 282.07

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Solution

The fourth proportional to 481.11, 663.93 and 282.07 is: 389.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.11 : 663.93 = 282.07 : x
  2. Step 2: Convert to fraction form
    481.11/663.93 = 282.07/x
  3. Step 3: Cross multiply
    481.11x = 663.93 × 282.07
  4. Step 4: Simplify right side
    481.11x = 187,274.74
  5. Step 5: Solve for x
    x = 187,274.74/481.11
  6. Step 6: Final answer
    x = 389.26

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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.