Home / 1,220.44-1,831.26-490.54

Finding the Fourth Proportional to 1,220.44, 1,831.26 and 490.54

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Solution

The fourth proportional to 1,220.44, 1,831.26 and 490.54 is: 736.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.44 : 1,831.26 = 490.54 : x
  2. Step 2: Convert to fraction form
    1,220.44/1,831.26 = 490.54/x
  3. Step 3: Cross multiply
    1,220.44x = 1,831.26 × 490.54
  4. Step 4: Simplify right side
    1,220.44x = 898,306.28
  5. Step 5: Solve for x
    x = 898,306.28/1,220.44
  6. Step 6: Final answer
    x = 736.05

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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.