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Finding the Fourth Proportional to 541.47, 747.02 and 331.48

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Solution

The fourth proportional to 541.47, 747.02 and 331.48 is: 457.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.47 : 747.02 = 331.48 : x
  2. Step 2: Convert to fraction form
    541.47/747.02 = 331.48/x
  3. Step 3: Cross multiply
    541.47x = 747.02 × 331.48
  4. Step 4: Simplify right side
    541.47x = 247,618.45
  5. Step 5: Solve for x
    x = 247,618.45/541.47
  6. Step 6: Final answer
    x = 457.31

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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.