Home / 727.82-1,091.73-180

Finding the Fourth Proportional to 727.82, 1,091.73 and 180

Calculator

Solution

The fourth proportional to 727.82, 1,091.73 and 180 is: 270

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.82 : 1,091.73 = 180 : x
  2. Step 2: Convert to fraction form
    727.82/1,091.73 = 180/x
  3. Step 3: Cross multiply
    727.82x = 1,091.73 × 180
  4. Step 4: Simplify right side
    727.82x = 196,511.40
  5. Step 5: Solve for x
    x = 196,511.40/727.82
  6. Step 6: Final answer
    x = 270

Related Problems

Find fourth proportional to 363.91, 545.87 and 90
Half scale
Find fourth proportional to 1,455.64, 2,183.46 and 360
Double scale
Find fourth proportional to 728.82, 1,093.23 and 181
Similar ratio
Find fourth proportional to 1,091.73, 1,637.60 and 270
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.