Home / 545-636

Finding the Third Proportional to 545 and 636

Calculator

Solution

The third proportional to 545 and 636 is: 742.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    545 : 636 = 636 : x
  2. Step 2: Convert to fraction form
    545/636 = 636/x
  3. Step 3: Cross multiply
    545x = 636 × 636
  4. Step 4: Simplify right side
    545x = 404,496
  5. Step 5: Solve for x
    x = 404,496/545
  6. Step 6: Final answer
    x = 742.19

Related Problems

Find third proportional to 272.50 and 318
Half scale
Find third proportional to 1,090 and 1,272
Double scale
Find third proportional to 547 and 638
Similar ratio
Find third proportional to 817.50 and 954
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.