Home / 161.25-342.75

Finding the Third Proportional to 161.25 and 342.75

Calculator

Solution

The third proportional to 161.25 and 342.75 is: 728.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.25 : 342.75 = 342.75 : x
  2. Step 2: Convert to fraction form
    161.25/342.75 = 342.75/x
  3. Step 3: Cross multiply
    161.25x = 342.75 × 342.75
  4. Step 4: Simplify right side
    161.25x = 117,477.56
  5. Step 5: Solve for x
    x = 117,477.56/161.25
  6. Step 6: Final answer
    x = 728.54

Related Problems

Find third proportional to 80.63 and 171.38
Half scale
Find third proportional to 322.50 and 685.50
Double scale
Find third proportional to 163 and 347
Similar ratio
Find third proportional to 241.88 and 514.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.