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Finding the Fourth Proportional to 444.69, 667.04 and 438.31

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Solution

The fourth proportional to 444.69, 667.04 and 438.31 is: 657.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.69 : 667.04 = 438.31 : x
  2. Step 2: Convert to fraction form
    444.69/667.04 = 438.31/x
  3. Step 3: Cross multiply
    444.69x = 667.04 × 438.31
  4. Step 4: Simplify right side
    444.69x = 292,368.94
  5. Step 5: Solve for x
    x = 292,368.94/444.69
  6. Step 6: Final answer
    x = 657.47

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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.