Home / 326.75-431.75

Finding the Third Proportional to 326.75 and 431.75

Calculator

Solution

The third proportional to 326.75 and 431.75 is: 570.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.75 : 431.75 = 431.75 : x
  2. Step 2: Convert to fraction form
    326.75/431.75 = 431.75/x
  3. Step 3: Cross multiply
    326.75x = 431.75 × 431.75
  4. Step 4: Simplify right side
    326.75x = 186,408.06
  5. Step 5: Solve for x
    x = 186,408.06/326.75
  6. Step 6: Final answer
    x = 570.49

Related Problems

Find third proportional to 163.38 and 215.88
Half scale
Find third proportional to 653.50 and 863.50
Double scale
Find third proportional to 329 and 434
Similar ratio
Find third proportional to 490.13 and 647.63
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.