Home / 556-613

Finding the Third Proportional to 556 and 613

Calculator

Solution

The third proportional to 556 and 613 is: 675.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    556 : 613 = 613 : x
  2. Step 2: Convert to fraction form
    556/613 = 613/x
  3. Step 3: Cross multiply
    556x = 613 × 613
  4. Step 4: Simplify right side
    556x = 375,769
  5. Step 5: Solve for x
    x = 375,769/556
  6. Step 6: Final answer
    x = 675.84

Related Problems

Find third proportional to 278 and 306.50
Half scale
Find third proportional to 1,112 and 1,226
Double scale
Find third proportional to 558 and 615
Similar ratio
Find third proportional to 834 and 919.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.