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Finding the Fourth Proportional to 453.96, 680.22 and 439.02

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Solution

The fourth proportional to 453.96, 680.22 and 439.02 is: 657.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.96 : 680.22 = 439.02 : x
  2. Step 2: Convert to fraction form
    453.96/680.22 = 439.02/x
  3. Step 3: Cross multiply
    453.96x = 680.22 × 439.02
  4. Step 4: Simplify right side
    453.96x = 298,630.18
  5. Step 5: Solve for x
    x = 298,630.18/453.96
  6. Step 6: Final answer
    x = 657.83

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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.