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Finding the Fourth Proportional to 394.95, 544.53 and 254.83

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Solution

The fourth proportional to 394.95, 544.53 and 254.83 is: 351.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.95 : 544.53 = 254.83 : x
  2. Step 2: Convert to fraction form
    394.95/544.53 = 254.83/x
  3. Step 3: Cross multiply
    394.95x = 544.53 × 254.83
  4. Step 4: Simplify right side
    394.95x = 138,762.58
  5. Step 5: Solve for x
    x = 138,762.58/394.95
  6. Step 6: Final answer
    x = 351.34

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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.