Home / 815.93-1,125.23-629.13

Finding the Fourth Proportional to 815.93, 1,125.23 and 629.13

Calculator

Solution

The fourth proportional to 815.93, 1,125.23 and 629.13 is: 867.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    815.93 : 1,125.23 = 629.13 : x
  2. Step 2: Convert to fraction form
    815.93/1,125.23 = 629.13/x
  3. Step 3: Cross multiply
    815.93x = 1,125.23 × 629.13
  4. Step 4: Simplify right side
    815.93x = 707,912.80
  5. Step 5: Solve for x
    x = 707,912.80/815.93
  6. Step 6: Final answer
    x = 867.62

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.