Home / 330.73-486.21

Finding the Third Proportional to 330.73 and 486.21

Calculator

Solution

The third proportional to 330.73 and 486.21 is: 714.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.73 : 486.21 = 486.21 : x
  2. Step 2: Convert to fraction form
    330.73/486.21 = 486.21/x
  3. Step 3: Cross multiply
    330.73x = 486.21 × 486.21
  4. Step 4: Simplify right side
    330.73x = 236,401.08
  5. Step 5: Solve for x
    x = 236,401.08/330.73
  6. Step 6: Final answer
    x = 714.79

Related Problems

Find third proportional to 165.36 and 243.11
Half scale
Find third proportional to 661.45 and 972.42
Double scale
Find third proportional to 333 and 489
Similar ratio
Find third proportional to 496.09 and 729.32
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.