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Finding the Fourth Proportional to 444.05, 665.46 and 423.39

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Solution

The fourth proportional to 444.05, 665.46 and 423.39 is: 634.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.05 : 665.46 = 423.39 : x
  2. Step 2: Convert to fraction form
    444.05/665.46 = 423.39/x
  3. Step 3: Cross multiply
    444.05x = 665.46 × 423.39
  4. Step 4: Simplify right side
    444.05x = 281,749.11
  5. Step 5: Solve for x
    x = 281,749.11/444.05
  6. Step 6: Final answer
    x = 634.50

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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.