Home / 235-356

Finding the Third Proportional to 235 and 356

Calculator

Solution

The third proportional to 235 and 356 is: 539.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    235 : 356 = 356 : x
  2. Step 2: Convert to fraction form
    235/356 = 356/x
  3. Step 3: Cross multiply
    235x = 356 × 356
  4. Step 4: Simplify right side
    235x = 126,736
  5. Step 5: Solve for x
    x = 126,736/235
  6. Step 6: Final answer
    x = 539.30

Related Problems

Find third proportional to 117.50 and 178
Half scale
Find third proportional to 470 and 712
Double scale
Find third proportional to 237 and 359
Similar ratio
Find third proportional to 352.50 and 534
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.