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Finding the Fourth Proportional to 541.73, 747.58 and 308.85

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Solution

The fourth proportional to 541.73, 747.58 and 308.85 is: 426.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.73 : 747.58 = 308.85 : x
  2. Step 2: Convert to fraction form
    541.73/747.58 = 308.85/x
  3. Step 3: Cross multiply
    541.73x = 747.58 × 308.85
  4. Step 4: Simplify right side
    541.73x = 230,890.08
  5. Step 5: Solve for x
    x = 230,890.08/541.73
  6. Step 6: Final answer
    x = 426.21

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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.