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Finding the Fourth Proportional to 444.33, 665.01 and 386.73

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Solution

The fourth proportional to 444.33, 665.01 and 386.73 is: 578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.33 : 665.01 = 386.73 : x
  2. Step 2: Convert to fraction form
    444.33/665.01 = 386.73/x
  3. Step 3: Cross multiply
    444.33x = 665.01 × 386.73
  4. Step 4: Simplify right side
    444.33x = 257,179.32
  5. Step 5: Solve for x
    x = 257,179.32/444.33
  6. Step 6: Final answer
    x = 578.80

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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.