Home / 1,220.68-1,831.26-451.24

Finding the Fourth Proportional to 1,220.68, 1,831.26 and 451.24

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Solution

The fourth proportional to 1,220.68, 1,831.26 and 451.24 is: 676.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.68 : 1,831.26 = 451.24 : x
  2. Step 2: Convert to fraction form
    1,220.68/1,831.26 = 451.24/x
  3. Step 3: Cross multiply
    1,220.68x = 1,831.26 × 451.24
  4. Step 4: Simplify right side
    1,220.68x = 826,337.76
  5. Step 5: Solve for x
    x = 826,337.76/1,220.68
  6. Step 6: Final answer
    x = 676.95

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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.