Home / 175.13-257.81

Finding the Third Proportional to 175.13 and 257.81

Calculator

Solution

The third proportional to 175.13 and 257.81 is: 379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.13 : 257.81 = 257.81 : x
  2. Step 2: Convert to fraction form
    175.13/257.81 = 257.81/x
  3. Step 3: Cross multiply
    175.13x = 257.81 × 257.81
  4. Step 4: Simplify right side
    175.13x = 66,467.29
  5. Step 5: Solve for x
    x = 66,467.29/175.13
  6. Step 6: Final answer
    x = 379.54

Related Problems

Find third proportional to 87.56 and 128.91
Half scale
Find third proportional to 350.25 and 515.63
Double scale
Find third proportional to 177 and 261
Similar ratio
Find third proportional to 262.69 and 386.72
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.