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Finding the Fourth Proportional to 482.44, 722.12 and 385.44

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Solution

The fourth proportional to 482.44, 722.12 and 385.44 is: 576.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.44 : 722.12 = 385.44 : x
  2. Step 2: Convert to fraction form
    482.44/722.12 = 385.44/x
  3. Step 3: Cross multiply
    482.44x = 722.12 × 385.44
  4. Step 4: Simplify right side
    482.44x = 278,333.93
  5. Step 5: Solve for x
    x = 278,333.93/482.44
  6. Step 6: Final answer
    x = 576.93

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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.