Home / 383.50-485

Finding the Third Proportional to 383.50 and 485

Calculator

Solution

The third proportional to 383.50 and 485 is: 613.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.50 : 485 = 485 : x
  2. Step 2: Convert to fraction form
    383.50/485 = 485/x
  3. Step 3: Cross multiply
    383.50x = 485 × 485
  4. Step 4: Simplify right side
    383.50x = 235,225
  5. Step 5: Solve for x
    x = 235,225/383.50
  6. Step 6: Final answer
    x = 613.36

Related Problems

Find third proportional to 191.75 and 242.50
Half scale
Find third proportional to 767 and 970
Double scale
Find third proportional to 386 and 488
Similar ratio
Find third proportional to 575.25 and 727.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.