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Finding the Fourth Proportional to 392.21, 540.81 and 244.65

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Solution

The fourth proportional to 392.21, 540.81 and 244.65 is: 337.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.21 : 540.81 = 244.65 : x
  2. Step 2: Convert to fraction form
    392.21/540.81 = 244.65/x
  3. Step 3: Cross multiply
    392.21x = 540.81 × 244.65
  4. Step 4: Simplify right side
    392.21x = 132,309.17
  5. Step 5: Solve for x
    x = 132,309.17/392.21
  6. Step 6: Final answer
    x = 337.34

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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.