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Finding the Fourth Proportional to 773.51, 1,160.24 and 225.70

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Solution

The fourth proportional to 773.51, 1,160.24 and 225.70 is: 338.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    773.51 : 1,160.24 = 225.70 : x
  2. Step 2: Convert to fraction form
    773.51/1,160.24 = 225.70/x
  3. Step 3: Cross multiply
    773.51x = 1,160.24 × 225.70
  4. Step 4: Simplify right side
    773.51x = 261,862.14
  5. Step 5: Solve for x
    x = 261,862.14/773.51
  6. Step 6: Final answer
    x = 338.54

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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.