Home / 239.75-440.50

Finding the Third Proportional to 239.75 and 440.50

Calculator

Solution

The third proportional to 239.75 and 440.50 is: 809.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.75 : 440.50 = 440.50 : x
  2. Step 2: Convert to fraction form
    239.75/440.50 = 440.50/x
  3. Step 3: Cross multiply
    239.75x = 440.50 × 440.50
  4. Step 4: Simplify right side
    239.75x = 194,040.25
  5. Step 5: Solve for x
    x = 194,040.25/239.75
  6. Step 6: Final answer
    x = 809.34

Related Problems

Find third proportional to 119.88 and 220.25
Half scale
Find third proportional to 479.50 and 881
Double scale
Find third proportional to 242 and 444
Similar ratio
Find third proportional to 359.63 and 660.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.