Home / 815.44-1,124.46-628.96

Finding the Fourth Proportional to 815.44, 1,124.46 and 628.96

Calculator

Solution

The fourth proportional to 815.44, 1,124.46 and 628.96 is: 867.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    815.44 : 1,124.46 = 628.96 : x
  2. Step 2: Convert to fraction form
    815.44/1,124.46 = 628.96/x
  3. Step 3: Cross multiply
    815.44x = 1,124.46 × 628.96
  4. Step 4: Simplify right side
    815.44x = 707,240.36
  5. Step 5: Solve for x
    x = 707,240.36/815.44
  6. Step 6: Final answer
    x = 867.31

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.