Home / 661.50-1,275

Finding the Third Proportional to 661.50 and 1,275

Calculator

Solution

The third proportional to 661.50 and 1,275 is: 2,457.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.50 : 1,275 = 1,275 : x
  2. Step 2: Convert to fraction form
    661.50/1,275 = 1,275/x
  3. Step 3: Cross multiply
    661.50x = 1,275 × 1,275
  4. Step 4: Simplify right side
    661.50x = 1,625,625
  5. Step 5: Solve for x
    x = 1,625,625/661.50
  6. Step 6: Final answer
    x = 2,457.48

Related Problems

Find third proportional to 330.75 and 637.50
Half scale
Find third proportional to 1,323 and 2,550
Double scale
Find third proportional to 664 and 1,279
Similar ratio
Find third proportional to 992.25 and 1,912.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.93) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.