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Finding the Fourth Proportional to 461.05, 636.90 and 444.21

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Solution

The fourth proportional to 461.05, 636.90 and 444.21 is: 613.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.05 : 636.90 = 444.21 : x
  2. Step 2: Convert to fraction form
    461.05/636.90 = 444.21/x
  3. Step 3: Cross multiply
    461.05x = 636.90 × 444.21
  4. Step 4: Simplify right side
    461.05x = 282,911.94
  5. Step 5: Solve for x
    x = 282,911.94/461.05
  6. Step 6: Final answer
    x = 613.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.