Home / 220.84-330.60-129.28

Finding the Fourth Proportional to 220.84, 330.60 and 129.28

Calculator

Solution

The fourth proportional to 220.84, 330.60 and 129.28 is: 193.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.84 : 330.60 = 129.28 : x
  2. Step 2: Convert to fraction form
    220.84/330.60 = 129.28/x
  3. Step 3: Cross multiply
    220.84x = 330.60 × 129.28
  4. Step 4: Simplify right side
    220.84x = 42,739.97
  5. Step 5: Solve for x
    x = 42,739.97/220.84
  6. Step 6: Final answer
    x = 193.53

Related Problems

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.