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Finding the Fourth Proportional to 893.06, 1,232.21 and 519.81

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Solution

The fourth proportional to 893.06, 1,232.21 and 519.81 is: 717.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.06 : 1,232.21 = 519.81 : x
  2. Step 2: Convert to fraction form
    893.06/1,232.21 = 519.81/x
  3. Step 3: Cross multiply
    893.06x = 1,232.21 × 519.81
  4. Step 4: Simplify right side
    893.06x = 640,516.86
  5. Step 5: Solve for x
    x = 640,516.86/893.06
  6. Step 6: Final answer
    x = 717.22

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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.