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Finding the Fourth Proportional to 392.41, 541.51 and 226.63

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Solution

The fourth proportional to 392.41, 541.51 and 226.63 is: 312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.41 : 541.51 = 226.63 : x
  2. Step 2: Convert to fraction form
    392.41/541.51 = 226.63/x
  3. Step 3: Cross multiply
    392.41x = 541.51 × 226.63
  4. Step 4: Simplify right side
    392.41x = 122,721.28
  5. Step 5: Solve for x
    x = 122,721.28/392.41
  6. Step 6: Final answer
    x = 312.74

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.