Home / 479-634

Finding the Third Proportional to 479 and 634

Calculator

Solution

The third proportional to 479 and 634 is: 839.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    479 : 634 = 634 : x
  2. Step 2: Convert to fraction form
    479/634 = 634/x
  3. Step 3: Cross multiply
    479x = 634 × 634
  4. Step 4: Simplify right side
    479x = 401,956
  5. Step 5: Solve for x
    x = 401,956/479
  6. Step 6: Final answer
    x = 839.16

Related Problems

Find third proportional to 239.50 and 317
Half scale
Find third proportional to 958 and 1,268
Double scale
Find third proportional to 481 and 637
Similar ratio
Find third proportional to 718.50 and 951
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.