Home / 189.84-408.80

Finding the Third Proportional to 189.84 and 408.80

Calculator

Solution

The third proportional to 189.84 and 408.80 is: 880.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.84 : 408.80 = 408.80 : x
  2. Step 2: Convert to fraction form
    189.84/408.80 = 408.80/x
  3. Step 3: Cross multiply
    189.84x = 408.80 × 408.80
  4. Step 4: Simplify right side
    189.84x = 167,114.89
  5. Step 5: Solve for x
    x = 167,114.89/189.84
  6. Step 6: Final answer
    x = 880.28

Related Problems

Find third proportional to 94.92 and 204.40
Half scale
Find third proportional to 379.69 and 817.59
Double scale
Find third proportional to 192 and 413
Similar ratio
Find third proportional to 284.77 and 613.20
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.