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Finding the Fourth Proportional to 453.14, 680.01 and 209.68

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Solution

The fourth proportional to 453.14, 680.01 and 209.68 is: 314.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.14 : 680.01 = 209.68 : x
  2. Step 2: Convert to fraction form
    453.14/680.01 = 209.68/x
  3. Step 3: Cross multiply
    453.14x = 680.01 × 209.68
  4. Step 4: Simplify right side
    453.14x = 142,582.80
  5. Step 5: Solve for x
    x = 142,582.80/453.14
  6. Step 6: Final answer
    x = 314.66

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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.