Home / 637.31-918

Finding the Third Proportional to 637.31 and 918

Calculator

Solution

The third proportional to 637.31 and 918 is: 1,322.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.31 : 918 = 918 : x
  2. Step 2: Convert to fraction form
    637.31/918 = 918/x
  3. Step 3: Cross multiply
    637.31x = 918 × 918
  4. Step 4: Simplify right side
    637.31x = 842,724
  5. Step 5: Solve for x
    x = 842,724/637.31
  6. Step 6: Final answer
    x = 1,322.31

Related Problems

Find third proportional to 318.66 and 459
Half scale
Find third proportional to 1,274.63 and 1,836
Double scale
Find third proportional to 639 and 921
Similar ratio
Find third proportional to 955.97 and 1,377
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.