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Finding the Fourth Proportional to 682.11, 941.61 and 472.25

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Solution

The fourth proportional to 682.11, 941.61 and 472.25 is: 651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.11 : 941.61 = 472.25 : x
  2. Step 2: Convert to fraction form
    682.11/941.61 = 472.25/x
  3. Step 3: Cross multiply
    682.11x = 941.61 × 472.25
  4. Step 4: Simplify right side
    682.11x = 444,670.61
  5. Step 5: Solve for x
    x = 444,670.61/682.11
  6. Step 6: Final answer
    x = 651.90

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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.