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Finding the Fourth Proportional to 1,168.92, 1,611.90 and 1,003.68

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Solution

The fourth proportional to 1,168.92, 1,611.90 and 1,003.68 is: 1,384.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.92 : 1,611.90 = 1,003.68 : x
  2. Step 2: Convert to fraction form
    1,168.92/1,611.90 = 1,003.68/x
  3. Step 3: Cross multiply
    1,168.92x = 1,611.90 × 1,003.68
  4. Step 4: Simplify right side
    1,168.92x = 1,617,831.79
  5. Step 5: Solve for x
    x = 1,617,831.79/1,168.92
  6. Step 6: Final answer
    x = 1,384.04

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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.