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Finding the Fourth Proportional to 1,136.94, 1,568.61 and 744.23

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Solution

The fourth proportional to 1,136.94, 1,568.61 and 744.23 is: 1,026.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,136.94 : 1,568.61 = 744.23 : x
  2. Step 2: Convert to fraction form
    1,136.94/1,568.61 = 744.23/x
  3. Step 3: Cross multiply
    1,136.94x = 1,568.61 × 744.23
  4. Step 4: Simplify right side
    1,136.94x = 1,167,398.78
  5. Step 5: Solve for x
    x = 1,167,398.78/1,136.94
  6. Step 6: Final answer
    x = 1,026.79

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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.