Home / 780.22-1,074.83-633.81

Finding the Fourth Proportional to 780.22, 1,074.83 and 633.81

Calculator

Solution

The fourth proportional to 780.22, 1,074.83 and 633.81 is: 873.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    780.22 : 1,074.83 = 633.81 : x
  2. Step 2: Convert to fraction form
    780.22/1,074.83 = 633.81/x
  3. Step 3: Cross multiply
    780.22x = 1,074.83 × 633.81
  4. Step 4: Simplify right side
    780.22x = 681,238.00
  5. Step 5: Solve for x
    x = 681,238.00/780.22
  6. Step 6: Final answer
    x = 873.14

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.