Home / 851.58-1,275.32-485.26

Finding the Fourth Proportional to 851.58, 1,275.32 and 485.26

Calculator

Solution

The fourth proportional to 851.58, 1,275.32 and 485.26 is: 726.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    851.58 : 1,275.32 = 485.26 : x
  2. Step 2: Convert to fraction form
    851.58/1,275.32 = 485.26/x
  3. Step 3: Cross multiply
    851.58x = 1,275.32 × 485.26
  4. Step 4: Simplify right side
    851.58x = 618,861.78
  5. Step 5: Solve for x
    x = 618,861.78/851.58
  6. Step 6: Final answer
    x = 726.72

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.