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Finding the Fourth Proportional to 750.09, 1,121.44 and 635.81

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Solution

The fourth proportional to 750.09, 1,121.44 and 635.81 is: 950.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.09 : 1,121.44 = 635.81 : x
  2. Step 2: Convert to fraction form
    750.09/1,121.44 = 635.81/x
  3. Step 3: Cross multiply
    750.09x = 1,121.44 × 635.81
  4. Step 4: Simplify right side
    750.09x = 713,023.98
  5. Step 5: Solve for x
    x = 713,023.98/750.09
  6. Step 6: Final answer
    x = 950.58

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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.