Home / 116.25-215

Finding the Third Proportional to 116.25 and 215

Calculator

Solution

The third proportional to 116.25 and 215 is: 397.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.25 : 215 = 215 : x
  2. Step 2: Convert to fraction form
    116.25/215 = 215/x
  3. Step 3: Cross multiply
    116.25x = 215 × 215
  4. Step 4: Simplify right side
    116.25x = 46,225
  5. Step 5: Solve for x
    x = 46,225/116.25
  6. Step 6: Final answer
    x = 397.63

Related Problems

Find third proportional to 58.13 and 107.50
Half scale
Find third proportional to 232.50 and 430
Double scale
Find third proportional to 118 and 219
Similar ratio
Find third proportional to 174.38 and 322.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.85) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.