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Finding the Fourth Proportional to 444.89, 668.38 and 391.93

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Solution

The fourth proportional to 444.89, 668.38 and 391.93 is: 588.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.89 : 668.38 = 391.93 : x
  2. Step 2: Convert to fraction form
    444.89/668.38 = 391.93/x
  3. Step 3: Cross multiply
    444.89x = 668.38 × 391.93
  4. Step 4: Simplify right side
    444.89x = 261,956.21
  5. Step 5: Solve for x
    x = 261,956.21/444.89
  6. Step 6: Final answer
    x = 588.81

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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.