Home / 107.50-217.25

Finding the Third Proportional to 107.50 and 217.25

Calculator

Solution

The third proportional to 107.50 and 217.25 is: 439.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.50 : 217.25 = 217.25 : x
  2. Step 2: Convert to fraction form
    107.50/217.25 = 217.25/x
  3. Step 3: Cross multiply
    107.50x = 217.25 × 217.25
  4. Step 4: Simplify right side
    107.50x = 47,197.56
  5. Step 5: Solve for x
    x = 47,197.56/107.50
  6. Step 6: Final answer
    x = 439.05

Related Problems

Find third proportional to 53.75 and 108.63
Half scale
Find third proportional to 215 and 434.50
Double scale
Find third proportional to 110 and 221
Similar ratio
Find third proportional to 161.25 and 325.88
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.