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Finding the Fourth Proportional to 444.79, 610.55 and 394.57

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Solution

The fourth proportional to 444.79, 610.55 and 394.57 is: 541.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.79 : 610.55 = 394.57 : x
  2. Step 2: Convert to fraction form
    444.79/610.55 = 394.57/x
  3. Step 3: Cross multiply
    444.79x = 610.55 × 394.57
  4. Step 4: Simplify right side
    444.79x = 240,902.74
  5. Step 5: Solve for x
    x = 240,902.74/444.79
  6. Step 6: Final answer
    x = 541.61

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.