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Finding the Fourth Proportional to 440.93, 608.44 and 394.15

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Solution

The fourth proportional to 440.93, 608.44 and 394.15 is: 543.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.93 : 608.44 = 394.15 : x
  2. Step 2: Convert to fraction form
    440.93/608.44 = 394.15/x
  3. Step 3: Cross multiply
    440.93x = 608.44 × 394.15
  4. Step 4: Simplify right side
    440.93x = 239,811.61
  5. Step 5: Solve for x
    x = 239,811.61/440.93
  6. Step 6: Final answer
    x = 543.88

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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.