Home / 302-631

Finding the Third Proportional to 302 and 631

Calculator

Solution

The third proportional to 302 and 631 is: 1,318.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    302 : 631 = 631 : x
  2. Step 2: Convert to fraction form
    302/631 = 631/x
  3. Step 3: Cross multiply
    302x = 631 × 631
  4. Step 4: Simplify right side
    302x = 398,161
  5. Step 5: Solve for x
    x = 398,161/302
  6. Step 6: Final answer
    x = 1,318.41

Related Problems

Find third proportional to 151 and 315.50
Half scale
Find third proportional to 604 and 1,262
Double scale
Find third proportional to 304 and 635
Similar ratio
Find third proportional to 453 and 946.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.