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Finding the Fourth Proportional to 394.45, 544.47 and 270.07

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Solution

The fourth proportional to 394.45, 544.47 and 270.07 is: 372.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.45 : 544.47 = 270.07 : x
  2. Step 2: Convert to fraction form
    394.45/544.47 = 270.07/x
  3. Step 3: Cross multiply
    394.45x = 544.47 × 270.07
  4. Step 4: Simplify right side
    394.45x = 147,045.01
  5. Step 5: Solve for x
    x = 147,045.01/394.45
  6. Step 6: Final answer
    x = 372.78

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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.