Home / 382-418

Finding the Third Proportional to 382 and 418

Calculator

Solution

The third proportional to 382 and 418 is: 457.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    382 : 418 = 418 : x
  2. Step 2: Convert to fraction form
    382/418 = 418/x
  3. Step 3: Cross multiply
    382x = 418 × 418
  4. Step 4: Simplify right side
    382x = 174,724
  5. Step 5: Solve for x
    x = 174,724/382
  6. Step 6: Final answer
    x = 457.39

Related Problems

Find third proportional to 191 and 209
Half scale
Find third proportional to 764 and 836
Double scale
Find third proportional to 384 and 420
Similar ratio
Find third proportional to 573 and 627
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.