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Finding the Fourth Proportional to 750.48, 1,124.92 and 360.24

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Solution

The fourth proportional to 750.48, 1,124.92 and 360.24 is: 539.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.48 : 1,124.92 = 360.24 : x
  2. Step 2: Convert to fraction form
    750.48/1,124.92 = 360.24/x
  3. Step 3: Cross multiply
    750.48x = 1,124.92 × 360.24
  4. Step 4: Simplify right side
    750.48x = 405,241.18
  5. Step 5: Solve for x
    x = 405,241.18/750.48
  6. Step 6: Final answer
    x = 539.98

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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.