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Finding the Fourth Proportional to 453.03, 679.08 and 247.55

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Solution

The fourth proportional to 453.03, 679.08 and 247.55 is: 371.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.03 : 679.08 = 247.55 : x
  2. Step 2: Convert to fraction form
    453.03/679.08 = 247.55/x
  3. Step 3: Cross multiply
    453.03x = 679.08 × 247.55
  4. Step 4: Simplify right side
    453.03x = 168,102.86
  5. Step 5: Solve for x
    x = 168,102.86/453.03
  6. Step 6: Final answer
    x = 371.06

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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.