Home / 191-356

Finding the Third Proportional to 191 and 356

Calculator

Solution

The third proportional to 191 and 356 is: 663.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    191 : 356 = 356 : x
  2. Step 2: Convert to fraction form
    191/356 = 356/x
  3. Step 3: Cross multiply
    191x = 356 × 356
  4. Step 4: Simplify right side
    191x = 126,736
  5. Step 5: Solve for x
    x = 126,736/191
  6. Step 6: Final answer
    x = 663.54

Related Problems

Find third proportional to 95.50 and 178
Half scale
Find third proportional to 382 and 712
Double scale
Find third proportional to 193 and 360
Similar ratio
Find third proportional to 286.50 and 534
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.