Home / 229.88-258.75

Finding the Third Proportional to 229.88 and 258.75

Calculator

Solution

The third proportional to 229.88 and 258.75 is: 291.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.88 : 258.75 = 258.75 : x
  2. Step 2: Convert to fraction form
    229.88/258.75 = 258.75/x
  3. Step 3: Cross multiply
    229.88x = 258.75 × 258.75
  4. Step 4: Simplify right side
    229.88x = 66,951.56
  5. Step 5: Solve for x
    x = 66,951.56/229.88
  6. Step 6: Final answer
    x = 291.25

Related Problems

Find third proportional to 114.94 and 129.38
Half scale
Find third proportional to 459.75 and 517.50
Double scale
Find third proportional to 232 and 261
Similar ratio
Find third proportional to 344.81 and 388.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.