Home / 748.03-1,121.27-254.27

Finding the Fourth Proportional to 748.03, 1,121.27 and 254.27

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Solution

The fourth proportional to 748.03, 1,121.27 and 254.27 is: 381.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    748.03 : 1,121.27 = 254.27 : x
  2. Step 2: Convert to fraction form
    748.03/1,121.27 = 254.27/x
  3. Step 3: Cross multiply
    748.03x = 1,121.27 × 254.27
  4. Step 4: Simplify right side
    748.03x = 285,106.85
  5. Step 5: Solve for x
    x = 285,106.85/748.03
  6. Step 6: Final answer
    x = 381.14

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1.5x scale

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.