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Finding the Fourth Proportional to 757.99, 1,136.44 and 611.92

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Solution

The fourth proportional to 757.99, 1,136.44 and 611.92 is: 917.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.99 : 1,136.44 = 611.92 : x
  2. Step 2: Convert to fraction form
    757.99/1,136.44 = 611.92/x
  3. Step 3: Cross multiply
    757.99x = 1,136.44 × 611.92
  4. Step 4: Simplify right side
    757.99x = 695,401.62
  5. Step 5: Solve for x
    x = 695,401.62/757.99
  6. Step 6: Final answer
    x = 917.43

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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.