Home / 673-721

Finding the Third Proportional to 673 and 721

Calculator

Solution

The third proportional to 673 and 721 is: 772.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    673 : 721 = 721 : x
  2. Step 2: Convert to fraction form
    673/721 = 721/x
  3. Step 3: Cross multiply
    673x = 721 × 721
  4. Step 4: Simplify right side
    673x = 519,841
  5. Step 5: Solve for x
    x = 519,841/673
  6. Step 6: Final answer
    x = 772.42

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.