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Finding the Fourth Proportional to 863.50, 1,192.44 and 602.24

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Solution

The fourth proportional to 863.50, 1,192.44 and 602.24 is: 831.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.50 : 1,192.44 = 602.24 : x
  2. Step 2: Convert to fraction form
    863.50/1,192.44 = 602.24/x
  3. Step 3: Cross multiply
    863.50x = 1,192.44 × 602.24
  4. Step 4: Simplify right side
    863.50x = 718,135.07
  5. Step 5: Solve for x
    x = 718,135.07/863.50
  6. Step 6: Final answer
    x = 831.66

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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.