Home / 222-399.75

Finding the Third Proportional to 222 and 399.75

Calculator

Solution

The third proportional to 222 and 399.75 is: 719.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    222 : 399.75 = 399.75 : x
  2. Step 2: Convert to fraction form
    222/399.75 = 399.75/x
  3. Step 3: Cross multiply
    222x = 399.75 × 399.75
  4. Step 4: Simplify right side
    222x = 159,800.06
  5. Step 5: Solve for x
    x = 159,800.06/222
  6. Step 6: Final answer
    x = 719.82

Related Problems

Find third proportional to 111 and 199.88
Half scale
Find third proportional to 444 and 799.50
Double scale
Find third proportional to 224 and 403
Similar ratio
Find third proportional to 333 and 599.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.80) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.