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Finding the Fourth Proportional to 468.85, 646.77 and 327

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Solution

The fourth proportional to 468.85, 646.77 and 327 is: 451.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.85 : 646.77 = 327 : x
  2. Step 2: Convert to fraction form
    468.85/646.77 = 327/x
  3. Step 3: Cross multiply
    468.85x = 646.77 × 327
  4. Step 4: Simplify right side
    468.85x = 211,493.79
  5. Step 5: Solve for x
    x = 211,493.79/468.85
  6. Step 6: Final answer
    x = 451.09

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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.