Home / 237.75-391.56

Finding the Third Proportional to 237.75 and 391.56

Calculator

Solution

The third proportional to 237.75 and 391.56 is: 644.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    237.75 : 391.56 = 391.56 : x
  2. Step 2: Convert to fraction form
    237.75/391.56 = 391.56/x
  3. Step 3: Cross multiply
    237.75x = 391.56 × 391.56
  4. Step 4: Simplify right side
    237.75x = 153,321.19
  5. Step 5: Solve for x
    x = 153,321.19/237.75
  6. Step 6: Final answer
    x = 644.88

Related Problems

Find third proportional to 118.88 and 195.78
Half scale
Find third proportional to 475.50 and 783.13
Double scale
Find third proportional to 240 and 395
Similar ratio
Find third proportional to 356.63 and 587.34
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.