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Finding the Fourth Proportional to 754.53, 1,136.94 and 620.58

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Solution

The fourth proportional to 754.53, 1,136.94 and 620.58 is: 935.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    754.53 : 1,136.94 = 620.58 : x
  2. Step 2: Convert to fraction form
    754.53/1,136.94 = 620.58/x
  3. Step 3: Cross multiply
    754.53x = 1,136.94 × 620.58
  4. Step 4: Simplify right side
    754.53x = 705,553.44
  5. Step 5: Solve for x
    x = 705,553.44/754.53
  6. Step 6: Final answer
    x = 935.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.