Home / 183-421

Finding the Third Proportional to 183 and 421

Calculator

Solution

The third proportional to 183 and 421 is: 968.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    183 : 421 = 421 : x
  2. Step 2: Convert to fraction form
    183/421 = 421/x
  3. Step 3: Cross multiply
    183x = 421 × 421
  4. Step 4: Simplify right side
    183x = 177,241
  5. Step 5: Solve for x
    x = 177,241/183
  6. Step 6: Final answer
    x = 968.53

Related Problems

Find third proportional to 91.50 and 210.50
Half scale
Find third proportional to 366 and 842
Double scale
Find third proportional to 185 and 426
Similar ratio
Find third proportional to 274.50 and 631.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.