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Finding the Fourth Proportional to 453.92, 681.27 and 338.09

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Solution

The fourth proportional to 453.92, 681.27 and 338.09 is: 507.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.92 : 681.27 = 338.09 : x
  2. Step 2: Convert to fraction form
    453.92/681.27 = 338.09/x
  3. Step 3: Cross multiply
    453.92x = 681.27 × 338.09
  4. Step 4: Simplify right side
    453.92x = 230,327.17
  5. Step 5: Solve for x
    x = 230,327.17/453.92
  6. Step 6: Final answer
    x = 507.42

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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.