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Finding the Fourth Proportional to 748.80, 1,121.06 and 594.94

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Solution

The fourth proportional to 748.80, 1,121.06 and 594.94 is: 890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.80 : 1,121.06 = 594.94 : x
  2. Step 2: Convert to fraction form
    748.80/1,121.06 = 594.94/x
  3. Step 3: Cross multiply
    748.80x = 1,121.06 × 594.94
  4. Step 4: Simplify right side
    748.80x = 666,963.44
  5. Step 5: Solve for x
    x = 666,963.44/748.80
  6. Step 6: Final answer
    x = 890.71

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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.