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Finding the Fourth Proportional to 453.73, 680.63 and 129.09

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Solution

The fourth proportional to 453.73, 680.63 and 129.09 is: 193.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.73 : 680.63 = 129.09 : x
  2. Step 2: Convert to fraction form
    453.73/680.63 = 129.09/x
  3. Step 3: Cross multiply
    453.73x = 680.63 × 129.09
  4. Step 4: Simplify right side
    453.73x = 87,864.80
  5. Step 5: Solve for x
    x = 87,864.80/453.73
  6. Step 6: Final answer
    x = 193.65

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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.