Home / 418-608

Finding the Third Proportional to 418 and 608

Calculator

Solution

The third proportional to 418 and 608 is: 884.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    418 : 608 = 608 : x
  2. Step 2: Convert to fraction form
    418/608 = 608/x
  3. Step 3: Cross multiply
    418x = 608 × 608
  4. Step 4: Simplify right side
    418x = 369,664
  5. Step 5: Solve for x
    x = 369,664/418
  6. Step 6: Final answer
    x = 884.36

Related Problems

Find third proportional to 209 and 304
Half scale
Find third proportional to 836 and 1,216
Double scale
Find third proportional to 420 and 611
Similar ratio
Find third proportional to 627 and 912
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.