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Finding the Fourth Proportional to 453.47, 679.73 and 247.82

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Solution

The fourth proportional to 453.47, 679.73 and 247.82 is: 371.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.47 : 679.73 = 247.82 : x
  2. Step 2: Convert to fraction form
    453.47/679.73 = 247.82/x
  3. Step 3: Cross multiply
    453.47x = 679.73 × 247.82
  4. Step 4: Simplify right side
    453.47x = 168,446.05
  5. Step 5: Solve for x
    x = 168,446.05/453.47
  6. Step 6: Final answer
    x = 371.46

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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.