Home / 622.50-663

Finding the Third Proportional to 622.50 and 663

Calculator

Solution

The third proportional to 622.50 and 663 is: 706.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.50 : 663 = 663 : x
  2. Step 2: Convert to fraction form
    622.50/663 = 663/x
  3. Step 3: Cross multiply
    622.50x = 663 × 663
  4. Step 4: Simplify right side
    622.50x = 439,569
  5. Step 5: Solve for x
    x = 439,569/622.50
  6. Step 6: Final answer
    x = 706.13

Related Problems

Find third proportional to 311.25 and 331.50
Half scale
Find third proportional to 1,245 and 1,326
Double scale
Find third proportional to 625 and 665
Similar ratio
Find third proportional to 933.75 and 994.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.