Home / 437-644

Finding the Third Proportional to 437 and 644

Calculator

Solution

The third proportional to 437 and 644 is: 949.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    437 : 644 = 644 : x
  2. Step 2: Convert to fraction form
    437/644 = 644/x
  3. Step 3: Cross multiply
    437x = 644 × 644
  4. Step 4: Simplify right side
    437x = 414,736
  5. Step 5: Solve for x
    x = 414,736/437
  6. Step 6: Final answer
    x = 949.05

Related Problems

Find third proportional to 218.50 and 322
Half scale
Find third proportional to 874 and 1,288
Double scale
Find third proportional to 439 and 647
Similar ratio
Find third proportional to 655.50 and 966
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.