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Finding the Fourth Proportional to 444.41, 665.00 and 386.84

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Solution

The fourth proportional to 444.41, 665.00 and 386.84 is: 578.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.41 : 665.00 = 386.84 : x
  2. Step 2: Convert to fraction form
    444.41/665.00 = 386.84/x
  3. Step 3: Cross multiply
    444.41x = 665.00 × 386.84
  4. Step 4: Simplify right side
    444.41x = 257,248.33
  5. Step 5: Solve for x
    x = 257,248.33/444.41
  6. Step 6: Final answer
    x = 578.86

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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.