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Finding the Fourth Proportional to 453.80, 679.62 and 323.48

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Solution

The fourth proportional to 453.80, 679.62 and 323.48 is: 484.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.80 : 679.62 = 323.48 : x
  2. Step 2: Convert to fraction form
    453.80/679.62 = 323.48/x
  3. Step 3: Cross multiply
    453.80x = 679.62 × 323.48
  4. Step 4: Simplify right side
    453.80x = 219,843.48
  5. Step 5: Solve for x
    x = 219,843.48/453.80
  6. Step 6: Final answer
    x = 484.45

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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.