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Finding the Fourth Proportional to 750.28, 1,124.54 and 519.24

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Solution

The fourth proportional to 750.28, 1,124.54 and 519.24 is: 778.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.28 : 1,124.54 = 519.24 : x
  2. Step 2: Convert to fraction form
    750.28/1,124.54 = 519.24/x
  3. Step 3: Cross multiply
    750.28x = 1,124.54 × 519.24
  4. Step 4: Simplify right side
    750.28x = 583,906.15
  5. Step 5: Solve for x
    x = 583,906.15/750.28
  6. Step 6: Final answer
    x = 778.25

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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.