Home / 180.38-279.19

Finding the Third Proportional to 180.38 and 279.19

Calculator

Solution

The third proportional to 180.38 and 279.19 is: 432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.38 : 279.19 = 279.19 : x
  2. Step 2: Convert to fraction form
    180.38/279.19 = 279.19/x
  3. Step 3: Cross multiply
    180.38x = 279.19 × 279.19
  4. Step 4: Simplify right side
    180.38x = 77,945.66
  5. Step 5: Solve for x
    x = 77,945.66/180.38
  6. Step 6: Final answer
    x = 432.13

Related Problems

Find third proportional to 90.19 and 139.59
Half scale
Find third proportional to 360.75 and 558.38
Double scale
Find third proportional to 182 and 282
Similar ratio
Find third proportional to 270.56 and 418.78
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.