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Finding the Fourth Proportional to 392.55, 541.39 and 294.54

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Solution

The fourth proportional to 392.55, 541.39 and 294.54 is: 406.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.55 : 541.39 = 294.54 : x
  2. Step 2: Convert to fraction form
    392.55/541.39 = 294.54/x
  3. Step 3: Cross multiply
    392.55x = 541.39 × 294.54
  4. Step 4: Simplify right side
    392.55x = 159,461.01
  5. Step 5: Solve for x
    x = 159,461.01/392.55
  6. Step 6: Final answer
    x = 406.22

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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.