Home / 131-201

Finding the Third Proportional to 131 and 201

Calculator

Solution

The third proportional to 131 and 201 is: 308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131 : 201 = 201 : x
  2. Step 2: Convert to fraction form
    131/201 = 201/x
  3. Step 3: Cross multiply
    131x = 201 × 201
  4. Step 4: Simplify right side
    131x = 40,401
  5. Step 5: Solve for x
    x = 40,401/131
  6. Step 6: Final answer
    x = 308.40

Related Problems

Find third proportional to 65.50 and 100.50
Half scale
Find third proportional to 262 and 402
Double scale
Find third proportional to 133 and 204
Similar ratio
Find third proportional to 196.50 and 301.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.