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Finding the Fourth Proportional to 1,074.36, 1,611.32 and 371.54

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Solution

The fourth proportional to 1,074.36, 1,611.32 and 371.54 is: 557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074.36 : 1,611.32 = 371.54 : x
  2. Step 2: Convert to fraction form
    1,074.36/1,611.32 = 371.54/x
  3. Step 3: Cross multiply
    1,074.36x = 1,611.32 × 371.54
  4. Step 4: Simplify right side
    1,074.36x = 598,659.92
  5. Step 5: Solve for x
    x = 598,659.92/1,074.36
  6. Step 6: Final answer
    x = 557.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.