Home / 301.31-638.44

Finding the Third Proportional to 301.31 and 638.44

Calculator

Solution

The third proportional to 301.31 and 638.44 is: 1,352.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.31 : 638.44 = 638.44 : x
  2. Step 2: Convert to fraction form
    301.31/638.44 = 638.44/x
  3. Step 3: Cross multiply
    301.31x = 638.44 × 638.44
  4. Step 4: Simplify right side
    301.31x = 407,602.44
  5. Step 5: Solve for x
    x = 407,602.44/301.31
  6. Step 6: Final answer
    x = 1,352.76

Related Problems

Find third proportional to 150.66 and 319.22
Half scale
Find third proportional to 602.63 and 1,276.88
Double scale
Find third proportional to 303 and 643
Similar ratio
Find third proportional to 451.97 and 957.66
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.