Home / 539.26-744.20-318.20

Finding the Fourth Proportional to 539.26, 744.20 and 318.20

Calculator

Solution

The fourth proportional to 539.26, 744.20 and 318.20 is: 439.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.26 : 744.20 = 318.20 : x
  2. Step 2: Convert to fraction form
    539.26/744.20 = 318.20/x
  3. Step 3: Cross multiply
    539.26x = 744.20 × 318.20
  4. Step 4: Simplify right side
    539.26x = 236,804.44
  5. Step 5: Solve for x
    x = 236,804.44/539.26
  6. Step 6: Final answer
    x = 439.13

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.