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Finding the Fourth Proportional to 819.29, 1,124.25 and 745.04

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Solution

The fourth proportional to 819.29, 1,124.25 and 745.04 is: 1,022.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    819.29 : 1,124.25 = 745.04 : x
  2. Step 2: Convert to fraction form
    819.29/1,124.25 = 745.04/x
  3. Step 3: Cross multiply
    819.29x = 1,124.25 × 745.04
  4. Step 4: Simplify right side
    819.29x = 837,608.39
  5. Step 5: Solve for x
    x = 837,608.39/819.29
  6. Step 6: Final answer
    x = 1,022.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.