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Finding the Fourth Proportional to 453.43, 679.68 and 270.91

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Solution

The fourth proportional to 453.43, 679.68 and 270.91 is: 406.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.43 : 679.68 = 270.91 : x
  2. Step 2: Convert to fraction form
    453.43/679.68 = 270.91/x
  3. Step 3: Cross multiply
    453.43x = 679.68 × 270.91
  4. Step 4: Simplify right side
    453.43x = 184,132.11
  5. Step 5: Solve for x
    x = 184,132.11/453.43
  6. Step 6: Final answer
    x = 406.09

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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.