Home / 1,220.89-1,831.23-343.33

Finding the Fourth Proportional to 1,220.89, 1,831.23 and 343.33

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Solution

The fourth proportional to 1,220.89, 1,831.23 and 343.33 is: 514.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.89 : 1,831.23 = 343.33 : x
  2. Step 2: Convert to fraction form
    1,220.89/1,831.23 = 343.33/x
  3. Step 3: Cross multiply
    1,220.89x = 1,831.23 × 343.33
  4. Step 4: Simplify right side
    1,220.89x = 628,707.04
  5. Step 5: Solve for x
    x = 628,707.04/1,220.89
  6. Step 6: Final answer
    x = 514.96

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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.