Home / 531-636

Finding the Third Proportional to 531 and 636

Calculator

Solution

The third proportional to 531 and 636 is: 761.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    531 : 636 = 636 : x
  2. Step 2: Convert to fraction form
    531/636 = 636/x
  3. Step 3: Cross multiply
    531x = 636 × 636
  4. Step 4: Simplify right side
    531x = 404,496
  5. Step 5: Solve for x
    x = 404,496/531
  6. Step 6: Final answer
    x = 761.76

Related Problems

Find third proportional to 265.50 and 318
Half scale
Find third proportional to 1,062 and 1,272
Double scale
Find third proportional to 533 and 638
Similar ratio
Find third proportional to 796.50 and 954
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.