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Finding the Fourth Proportional to 541.21, 746.85 and 308.29

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Solution

The fourth proportional to 541.21, 746.85 and 308.29 is: 425.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.21 : 746.85 = 308.29 : x
  2. Step 2: Convert to fraction form
    541.21/746.85 = 308.29/x
  3. Step 3: Cross multiply
    541.21x = 746.85 × 308.29
  4. Step 4: Simplify right side
    541.21x = 230,246.39
  5. Step 5: Solve for x
    x = 230,246.39/541.21
  6. Step 6: Final answer
    x = 425.43

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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.