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Finding the Fourth Proportional to 541.67, 747.46 and 331.76

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Solution

The fourth proportional to 541.67, 747.46 and 331.76 is: 457.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.67 : 747.46 = 331.76 : x
  2. Step 2: Convert to fraction form
    541.67/747.46 = 331.76/x
  3. Step 3: Cross multiply
    541.67x = 747.46 × 331.76
  4. Step 4: Simplify right side
    541.67x = 247,978.16
  5. Step 5: Solve for x
    x = 247,978.16/541.67
  6. Step 6: Final answer
    x = 457.80

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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.