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Finding the Fourth Proportional to 892.45, 1,232.01 and 519.38

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Solution

The fourth proportional to 892.45, 1,232.01 and 519.38 is: 716.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.45 : 1,232.01 = 519.38 : x
  2. Step 2: Convert to fraction form
    892.45/1,232.01 = 519.38/x
  3. Step 3: Cross multiply
    892.45x = 1,232.01 × 519.38
  4. Step 4: Simplify right side
    892.45x = 639,875.19
  5. Step 5: Solve for x
    x = 639,875.19/892.45
  6. Step 6: Final answer
    x = 716.99

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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.