Home / 203-217

Finding the Third Proportional to 203 and 217

Calculator

Solution

The third proportional to 203 and 217 is: 231.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    203 : 217 = 217 : x
  2. Step 2: Convert to fraction form
    203/217 = 217/x
  3. Step 3: Cross multiply
    203x = 217 × 217
  4. Step 4: Simplify right side
    203x = 47,089
  5. Step 5: Solve for x
    x = 47,089/203
  6. Step 6: Final answer
    x = 231.97

Related Problems

Find third proportional to 101.50 and 108.50
Half scale
Find third proportional to 406 and 434
Double scale
Find third proportional to 205 and 219
Similar ratio
Find third proportional to 304.50 and 325.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.