Home / 919.88-1,268.50-570.44

Finding the Fourth Proportional to 919.88, 1,268.50 and 570.44

Calculator

Solution

The fourth proportional to 919.88, 1,268.50 and 570.44 is: 786.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    919.88 : 1,268.50 = 570.44 : x
  2. Step 2: Convert to fraction form
    919.88/1,268.50 = 570.44/x
  3. Step 3: Cross multiply
    919.88x = 1,268.50 × 570.44
  4. Step 4: Simplify right side
    919.88x = 723,603.14
  5. Step 5: Solve for x
    x = 723,603.14/919.88
  6. Step 6: Final answer
    x = 786.63

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.