Home / 685.50-807

Finding the Third Proportional to 685.50 and 807

Calculator

Solution

The third proportional to 685.50 and 807 is: 950.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    685.50 : 807 = 807 : x
  2. Step 2: Convert to fraction form
    685.50/807 = 807/x
  3. Step 3: Cross multiply
    685.50x = 807 × 807
  4. Step 4: Simplify right side
    685.50x = 651,249
  5. Step 5: Solve for x
    x = 651,249/685.50
  6. Step 6: Final answer
    x = 950.04

Related Problems

Find third proportional to 342.75 and 403.50
Half scale
Find third proportional to 1,371 and 1,614
Double scale
Find third proportional to 688 and 809
Similar ratio
Find third proportional to 1,028.25 and 1,210.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.