Home / 170.75-378.88

Finding the Third Proportional to 170.75 and 378.88

Calculator

Solution

The third proportional to 170.75 and 378.88 is: 840.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.75 : 378.88 = 378.88 : x
  2. Step 2: Convert to fraction form
    170.75/378.88 = 378.88/x
  3. Step 3: Cross multiply
    170.75x = 378.88 × 378.88
  4. Step 4: Simplify right side
    170.75x = 143,546.27
  5. Step 5: Solve for x
    x = 143,546.27/170.75
  6. Step 6: Final answer
    x = 840.68

Related Problems

Find third proportional to 85.38 and 189.44
Half scale
Find third proportional to 341.50 and 757.75
Double scale
Find third proportional to 173 and 383
Similar ratio
Find third proportional to 256.13 and 568.31
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.