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Finding the Fourth Proportional to 1,143.84, 1,578.84 and 750.96

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Solution

The fourth proportional to 1,143.84, 1,578.84 and 750.96 is: 1,036.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.84 : 1,578.84 = 750.96 : x
  2. Step 2: Convert to fraction form
    1,143.84/1,578.84 = 750.96/x
  3. Step 3: Cross multiply
    1,143.84x = 1,578.84 × 750.96
  4. Step 4: Simplify right side
    1,143.84x = 1,185,645.69
  5. Step 5: Solve for x
    x = 1,185,645.69/1,143.84
  6. Step 6: Final answer
    x = 1,036.55

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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.