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Finding the Fourth Proportional to 541.28, 747.02 and 308.44

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Solution

The fourth proportional to 541.28, 747.02 and 308.44 is: 425.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.28 : 747.02 = 308.44 : x
  2. Step 2: Convert to fraction form
    541.28/747.02 = 308.44/x
  3. Step 3: Cross multiply
    541.28x = 747.02 × 308.44
  4. Step 4: Simplify right side
    541.28x = 230,410.85
  5. Step 5: Solve for x
    x = 230,410.85/541.28
  6. Step 6: Final answer
    x = 425.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.