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Finding the Fourth Proportional to 632.22, 872.49 and 352.47

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Solution

The fourth proportional to 632.22, 872.49 and 352.47 is: 486.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.22 : 872.49 = 352.47 : x
  2. Step 2: Convert to fraction form
    632.22/872.49 = 352.47/x
  3. Step 3: Cross multiply
    632.22x = 872.49 × 352.47
  4. Step 4: Simplify right side
    632.22x = 307,526.55
  5. Step 5: Solve for x
    x = 307,526.55/632.22
  6. Step 6: Final answer
    x = 486.42

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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.