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Finding the Fourth Proportional to 394.89, 544.98 and 226.89

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Solution

The fourth proportional to 394.89, 544.98 and 226.89 is: 313.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.89 : 544.98 = 226.89 : x
  2. Step 2: Convert to fraction form
    394.89/544.98 = 226.89/x
  3. Step 3: Cross multiply
    394.89x = 544.98 × 226.89
  4. Step 4: Simplify right side
    394.89x = 123,650.51
  5. Step 5: Solve for x
    x = 123,650.51/394.89
  6. Step 6: Final answer
    x = 313.13

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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.