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Finding the Fourth Proportional to 453.56, 680.04 and 316.68

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Solution

The fourth proportional to 453.56, 680.04 and 316.68 is: 474.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.56 : 680.04 = 316.68 : x
  2. Step 2: Convert to fraction form
    453.56/680.04 = 316.68/x
  3. Step 3: Cross multiply
    453.56x = 680.04 × 316.68
  4. Step 4: Simplify right side
    453.56x = 215,355.07
  5. Step 5: Solve for x
    x = 215,355.07/453.56
  6. Step 6: Final answer
    x = 474.81

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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.