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Finding the Fourth Proportional to 394.31, 544.16 and 236.99

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Solution

The fourth proportional to 394.31, 544.16 and 236.99 is: 327.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.31 : 544.16 = 236.99 : x
  2. Step 2: Convert to fraction form
    394.31/544.16 = 236.99/x
  3. Step 3: Cross multiply
    394.31x = 544.16 × 236.99
  4. Step 4: Simplify right side
    394.31x = 128,958.35
  5. Step 5: Solve for x
    x = 128,958.35/394.31
  6. Step 6: Final answer
    x = 327.05

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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.