Home / 166.25-258.75

Finding the Third Proportional to 166.25 and 258.75

Calculator

Solution

The third proportional to 166.25 and 258.75 is: 402.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.25 : 258.75 = 258.75 : x
  2. Step 2: Convert to fraction form
    166.25/258.75 = 258.75/x
  3. Step 3: Cross multiply
    166.25x = 258.75 × 258.75
  4. Step 4: Simplify right side
    166.25x = 66,951.56
  5. Step 5: Solve for x
    x = 66,951.56/166.25
  6. Step 6: Final answer
    x = 402.72

Related Problems

Find third proportional to 83.13 and 129.38
Half scale
Find third proportional to 332.50 and 517.50
Double scale
Find third proportional to 168 and 262
Similar ratio
Find third proportional to 249.38 and 388.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.