Home / 110.81-207.56

Finding the Third Proportional to 110.81 and 207.56

Calculator

Solution

The third proportional to 110.81 and 207.56 is: 388.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.81 : 207.56 = 207.56 : x
  2. Step 2: Convert to fraction form
    110.81/207.56 = 207.56/x
  3. Step 3: Cross multiply
    110.81x = 207.56 × 207.56
  4. Step 4: Simplify right side
    110.81x = 43,082.19
  5. Step 5: Solve for x
    x = 43,082.19/110.81
  6. Step 6: Final answer
    x = 388.78

Related Problems

Find third proportional to 55.41 and 103.78
Half scale
Find third proportional to 221.63 and 415.13
Double scale
Find third proportional to 113 and 211
Similar ratio
Find third proportional to 166.22 and 311.34
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.87) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.