Home / 577-629

Finding the Third Proportional to 577 and 629

Calculator

Solution

The third proportional to 577 and 629 is: 685.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    577 : 629 = 629 : x
  2. Step 2: Convert to fraction form
    577/629 = 629/x
  3. Step 3: Cross multiply
    577x = 629 × 629
  4. Step 4: Simplify right side
    577x = 395,641
  5. Step 5: Solve for x
    x = 395,641/577
  6. Step 6: Final answer
    x = 685.69

Related Problems

Find third proportional to 288.50 and 314.50
Half scale
Find third proportional to 1,154 and 1,258
Double scale
Find third proportional to 579 and 631
Similar ratio
Find third proportional to 865.50 and 943.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.