Home / 300.66-383.91

Finding the Third Proportional to 300.66 and 383.91

Calculator

Solution

The third proportional to 300.66 and 383.91 is: 490.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.66 : 383.91 = 383.91 : x
  2. Step 2: Convert to fraction form
    300.66/383.91 = 383.91/x
  3. Step 3: Cross multiply
    300.66x = 383.91 × 383.91
  4. Step 4: Simplify right side
    300.66x = 147,384.01
  5. Step 5: Solve for x
    x = 147,384.01/300.66
  6. Step 6: Final answer
    x = 490.21

Related Problems

Find third proportional to 150.33 and 191.95
Half scale
Find third proportional to 601.31 and 767.81
Double scale
Find third proportional to 303 and 386
Similar ratio
Find third proportional to 450.98 and 575.86
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.