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Finding the Fourth Proportional to 461.18, 633.78 and 439.77

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Solution

The fourth proportional to 461.18, 633.78 and 439.77 is: 604.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.18 : 633.78 = 439.77 : x
  2. Step 2: Convert to fraction form
    461.18/633.78 = 439.77/x
  3. Step 3: Cross multiply
    461.18x = 633.78 × 439.77
  4. Step 4: Simplify right side
    461.18x = 278,717.43
  5. Step 5: Solve for x
    x = 278,717.43/461.18
  6. Step 6: Final answer
    x = 604.36

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.