Home / 181.50-381

Finding the Third Proportional to 181.50 and 381

Calculator

Solution

The third proportional to 181.50 and 381 is: 799.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.50 : 381 = 381 : x
  2. Step 2: Convert to fraction form
    181.50/381 = 381/x
  3. Step 3: Cross multiply
    181.50x = 381 × 381
  4. Step 4: Simplify right side
    181.50x = 145,161
  5. Step 5: Solve for x
    x = 145,161/181.50
  6. Step 6: Final answer
    x = 799.79

Related Problems

Find third proportional to 90.75 and 190.50
Half scale
Find third proportional to 363 and 762
Double scale
Find third proportional to 184 and 385
Similar ratio
Find third proportional to 272.25 and 571.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.