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Finding the Fourth Proportional to 484.44, 726.76 and 438.66

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Solution

The fourth proportional to 484.44, 726.76 and 438.66 is: 658.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.44 : 726.76 = 438.66 : x
  2. Step 2: Convert to fraction form
    484.44/726.76 = 438.66/x
  3. Step 3: Cross multiply
    484.44x = 726.76 × 438.66
  4. Step 4: Simplify right side
    484.44x = 318,800.54
  5. Step 5: Solve for x
    x = 318,800.54/484.44
  6. Step 6: Final answer
    x = 658.08

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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.