Home / 1,221.06-1,831.53-451.50

Finding the Fourth Proportional to 1,221.06, 1,831.53 and 451.50

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Solution

The fourth proportional to 1,221.06, 1,831.53 and 451.50 is: 677.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221.06 : 1,831.53 = 451.50 : x
  2. Step 2: Convert to fraction form
    1,221.06/1,831.53 = 451.50/x
  3. Step 3: Cross multiply
    1,221.06x = 1,831.53 × 451.50
  4. Step 4: Simplify right side
    1,221.06x = 826,935.80
  5. Step 5: Solve for x
    x = 826,935.80/1,221.06
  6. Step 6: Final answer
    x = 677.23

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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.