Home / 862.54-1,190.31-513.16

Finding the Fourth Proportional to 862.54, 1,190.31 and 513.16

Calculator

Solution

The fourth proportional to 862.54, 1,190.31 and 513.16 is: 708.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.54 : 1,190.31 = 513.16 : x
  2. Step 2: Convert to fraction form
    862.54/1,190.31 = 513.16/x
  3. Step 3: Cross multiply
    862.54x = 1,190.31 × 513.16
  4. Step 4: Simplify right side
    862.54x = 610,819.48
  5. Step 5: Solve for x
    x = 610,819.48/862.54
  6. Step 6: Final answer
    x = 708.16

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.