Home / 152.50-394.75

Finding the Third Proportional to 152.50 and 394.75

Calculator

Solution

The third proportional to 152.50 and 394.75 is: 1,021.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.50 : 394.75 = 394.75 : x
  2. Step 2: Convert to fraction form
    152.50/394.75 = 394.75/x
  3. Step 3: Cross multiply
    152.50x = 394.75 × 394.75
  4. Step 4: Simplify right side
    152.50x = 155,827.56
  5. Step 5: Solve for x
    x = 155,827.56/152.50
  6. Step 6: Final answer
    x = 1,021.82

Related Problems

Find third proportional to 76.25 and 197.38
Half scale
Find third proportional to 305 and 789.50
Double scale
Find third proportional to 155 and 400
Similar ratio
Find third proportional to 228.75 and 592.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.