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Finding the Fourth Proportional to 541.59, 747.19 and 331.74

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Solution

The fourth proportional to 541.59, 747.19 and 331.74 is: 457.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.59 : 747.19 = 331.74 : x
  2. Step 2: Convert to fraction form
    541.59/747.19 = 331.74/x
  3. Step 3: Cross multiply
    541.59x = 747.19 × 331.74
  4. Step 4: Simplify right side
    541.59x = 247,872.81
  5. Step 5: Solve for x
    x = 247,872.81/541.59
  6. Step 6: Final answer
    x = 457.68

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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.