Home / 17-27.69

Finding the Third Proportional to 17 and 27.69

Calculator

Solution

The third proportional to 17 and 27.69 is: 45.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17 : 27.69 = 27.69 : x
  2. Step 2: Convert to fraction form
    17/27.69 = 27.69/x
  3. Step 3: Cross multiply
    17x = 27.69 × 27.69
  4. Step 4: Simplify right side
    17x = 766.60
  5. Step 5: Solve for x
    x = 766.60/17
  6. Step 6: Final answer
    x = 45.09

Related Problems

Find third proportional to 8.50 and 13.84
Half scale
Find third proportional to 34 and 55.38
Double scale
Find third proportional to 19 and 31
Similar ratio
Find third proportional to 25.50 and 41.53
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.63) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.