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Finding the Fourth Proportional to 622.96, 861.24 and 467.44

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Solution

The fourth proportional to 622.96, 861.24 and 467.44 is: 646.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.96 : 861.24 = 467.44 : x
  2. Step 2: Convert to fraction form
    622.96/861.24 = 467.44/x
  3. Step 3: Cross multiply
    622.96x = 861.24 × 467.44
  4. Step 4: Simplify right side
    622.96x = 402,578.03
  5. Step 5: Solve for x
    x = 402,578.03/622.96
  6. Step 6: Final answer
    x = 646.23

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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.