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Finding the Fourth Proportional to 750.61, 1,124.31 and 360.03

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Solution

The fourth proportional to 750.61, 1,124.31 and 360.03 is: 539.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.61 : 1,124.31 = 360.03 : x
  2. Step 2: Convert to fraction form
    750.61/1,124.31 = 360.03/x
  3. Step 3: Cross multiply
    750.61x = 1,124.31 × 360.03
  4. Step 4: Simplify right side
    750.61x = 404,785.33
  5. Step 5: Solve for x
    x = 404,785.33/750.61
  6. Step 6: Final answer
    x = 539.28

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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.