Home / 726.88-1,085.60-629.68

Finding the Fourth Proportional to 726.88, 1,085.60 and 629.68

Calculator

Solution

The fourth proportional to 726.88, 1,085.60 and 629.68 is: 940.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.88 : 1,085.60 = 629.68 : x
  2. Step 2: Convert to fraction form
    726.88/1,085.60 = 629.68/x
  3. Step 3: Cross multiply
    726.88x = 1,085.60 × 629.68
  4. Step 4: Simplify right side
    726.88x = 683,580.61
  5. Step 5: Solve for x
    x = 683,580.61/726.88
  6. Step 6: Final answer
    x = 940.43

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.