Home / 443-831

Finding the Third Proportional to 443 and 831

Calculator

Solution

The third proportional to 443 and 831 is: 1,558.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    443 : 831 = 831 : x
  2. Step 2: Convert to fraction form
    443/831 = 831/x
  3. Step 3: Cross multiply
    443x = 831 × 831
  4. Step 4: Simplify right side
    443x = 690,561
  5. Step 5: Solve for x
    x = 690,561/443
  6. Step 6: Final answer
    x = 1,558.83

Related Problems

Find third proportional to 221.50 and 415.50
Half scale
Find third proportional to 886 and 1,662
Double scale
Find third proportional to 445 and 835
Similar ratio
Find third proportional to 664.50 and 1,246.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.