Home / 1,311.33-1,965.72-433.23

Finding the Fourth Proportional to 1,311.33, 1,965.72 and 433.23

Calculator

Solution

The fourth proportional to 1,311.33, 1,965.72 and 433.23 is: 649.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311.33 : 1,965.72 = 433.23 : x
  2. Step 2: Convert to fraction form
    1,311.33/1,965.72 = 433.23/x
  3. Step 3: Cross multiply
    1,311.33x = 1,965.72 × 433.23
  4. Step 4: Simplify right side
    1,311.33x = 851,608.88
  5. Step 5: Solve for x
    x = 851,608.88/1,311.33
  6. Step 6: Final answer
    x = 649.42

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.