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Finding the Fourth Proportional to 392.14, 540.98 and 226.29

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Solution

The fourth proportional to 392.14, 540.98 and 226.29 is: 312.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.14 : 540.98 = 226.29 : x
  2. Step 2: Convert to fraction form
    392.14/540.98 = 226.29/x
  3. Step 3: Cross multiply
    392.14x = 540.98 × 226.29
  4. Step 4: Simplify right side
    392.14x = 122,420.11
  5. Step 5: Solve for x
    x = 122,420.11/392.14
  6. Step 6: Final answer
    x = 312.18

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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.