Home / 28.50-68.06

Finding the Third Proportional to 28.50 and 68.06

Calculator

Solution

The third proportional to 28.50 and 68.06 is: 162.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28.50 : 68.06 = 68.06 : x
  2. Step 2: Convert to fraction form
    28.50/68.06 = 68.06/x
  3. Step 3: Cross multiply
    28.50x = 68.06 × 68.06
  4. Step 4: Simplify right side
    28.50x = 4,632.50
  5. Step 5: Solve for x
    x = 4,632.50/28.50
  6. Step 6: Final answer
    x = 162.54

Related Problems

Find third proportional to 14.25 and 34.03
Half scale
Find third proportional to 57 and 136.13
Double scale
Find third proportional to 31 and 73
Similar ratio
Find third proportional to 42.75 and 102.09
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.