Home / 782.31-1,078.93-616.26

Finding the Fourth Proportional to 782.31, 1,078.93 and 616.26

Calculator

Solution

The fourth proportional to 782.31, 1,078.93 and 616.26 is: 849.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    782.31 : 1,078.93 = 616.26 : x
  2. Step 2: Convert to fraction form
    782.31/1,078.93 = 616.26/x
  3. Step 3: Cross multiply
    782.31x = 1,078.93 × 616.26
  4. Step 4: Simplify right side
    782.31x = 664,906.22
  5. Step 5: Solve for x
    x = 664,906.22/782.31
  6. Step 6: Final answer
    x = 849.92

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.