Home / 301.50-440.25

Finding the Third Proportional to 301.50 and 440.25

Calculator

Solution

The third proportional to 301.50 and 440.25 is: 642.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.50 : 440.25 = 440.25 : x
  2. Step 2: Convert to fraction form
    301.50/440.25 = 440.25/x
  3. Step 3: Cross multiply
    301.50x = 440.25 × 440.25
  4. Step 4: Simplify right side
    301.50x = 193,820.06
  5. Step 5: Solve for x
    x = 193,820.06/301.50
  6. Step 6: Final answer
    x = 642.85

Related Problems

Find third proportional to 150.75 and 220.13
Half scale
Find third proportional to 603 and 880.50
Double scale
Find third proportional to 304 and 443
Similar ratio
Find third proportional to 452.25 and 660.38
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.