Home / 326.75-438

Finding the Third Proportional to 326.75 and 438

Calculator

Solution

The third proportional to 326.75 and 438 is: 587.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.75 : 438 = 438 : x
  2. Step 2: Convert to fraction form
    326.75/438 = 438/x
  3. Step 3: Cross multiply
    326.75x = 438 × 438
  4. Step 4: Simplify right side
    326.75x = 191,844
  5. Step 5: Solve for x
    x = 191,844/326.75
  6. Step 6: Final answer
    x = 587.13

Related Problems

Find third proportional to 163.38 and 219
Half scale
Find third proportional to 653.50 and 876
Double scale
Find third proportional to 329 and 441
Similar ratio
Find third proportional to 490.13 and 657
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.