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Finding the Fourth Proportional to 426.71, 638.54 and 366.56

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Solution

The fourth proportional to 426.71, 638.54 and 366.56 is: 548.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.71 : 638.54 = 366.56 : x
  2. Step 2: Convert to fraction form
    426.71/638.54 = 366.56/x
  3. Step 3: Cross multiply
    426.71x = 638.54 × 366.56
  4. Step 4: Simplify right side
    426.71x = 234,063.22
  5. Step 5: Solve for x
    x = 234,063.22/426.71
  6. Step 6: Final answer
    x = 548.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.