Home / 371-685

Finding the Third Proportional to 371 and 685

Calculator

Solution

The third proportional to 371 and 685 is: 1,264.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    371 : 685 = 685 : x
  2. Step 2: Convert to fraction form
    371/685 = 685/x
  3. Step 3: Cross multiply
    371x = 685 × 685
  4. Step 4: Simplify right side
    371x = 469,225
  5. Step 5: Solve for x
    x = 469,225/371
  6. Step 6: Final answer
    x = 1,264.76

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.85) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.