Home / 818-877

Finding the Third Proportional to 818 and 877

Calculator

Solution

The third proportional to 818 and 877 is: 940.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    818 : 877 = 877 : x
  2. Step 2: Convert to fraction form
    818/877 = 877/x
  3. Step 3: Cross multiply
    818x = 877 × 877
  4. Step 4: Simplify right side
    818x = 769,129
  5. Step 5: Solve for x
    x = 769,129/818
  6. Step 6: Final answer
    x = 940.26

Related Problems

Find third proportional to 409 and 438.50
Half scale
Find third proportional to 1,636 and 1,754
Double scale
Find third proportional to 820 and 879
Similar ratio
Find third proportional to 1,227 and 1,315.50
1.5x scale

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.