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Finding the Fourth Proportional to 392.50, 541.42 and 244.87

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Solution

The fourth proportional to 392.50, 541.42 and 244.87 is: 337.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.50 : 541.42 = 244.87 : x
  2. Step 2: Convert to fraction form
    392.50/541.42 = 244.87/x
  3. Step 3: Cross multiply
    392.50x = 541.42 × 244.87
  4. Step 4: Simplify right side
    392.50x = 132,576.29
  5. Step 5: Solve for x
    x = 132,576.29/392.50
  6. Step 6: Final answer
    x = 337.78

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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.