Home / 146-215

Finding the Third Proportional to 146 and 215

Calculator

Solution

The third proportional to 146 and 215 is: 316.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    146 : 215 = 215 : x
  2. Step 2: Convert to fraction form
    146/215 = 215/x
  3. Step 3: Cross multiply
    146x = 215 × 215
  4. Step 4: Simplify right side
    146x = 46,225
  5. Step 5: Solve for x
    x = 46,225/146
  6. Step 6: Final answer
    x = 316.61

Related Problems

Find third proportional to 73 and 107.50
Half scale
Find third proportional to 292 and 430
Double scale
Find third proportional to 148 and 218
Similar ratio
Find third proportional to 219 and 322.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.