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Finding the Fourth Proportional to 394.17, 544.29 and 295.74

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Solution

The fourth proportional to 394.17, 544.29 and 295.74 is: 408.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.17 : 544.29 = 295.74 : x
  2. Step 2: Convert to fraction form
    394.17/544.29 = 295.74/x
  3. Step 3: Cross multiply
    394.17x = 544.29 × 295.74
  4. Step 4: Simplify right side
    394.17x = 160,968.32
  5. Step 5: Solve for x
    x = 160,968.32/394.17
  6. Step 6: Final answer
    x = 408.37

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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.