Home / 204-408.50

Finding the Third Proportional to 204 and 408.50

Calculator

Solution

The third proportional to 204 and 408.50 is: 818.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    204 : 408.50 = 408.50 : x
  2. Step 2: Convert to fraction form
    204/408.50 = 408.50/x
  3. Step 3: Cross multiply
    204x = 408.50 × 408.50
  4. Step 4: Simplify right side
    204x = 166,872.25
  5. Step 5: Solve for x
    x = 166,872.25/204
  6. Step 6: Final answer
    x = 818.00

Related Problems

Find third proportional to 102 and 204.25
Half scale
Find third proportional to 408 and 817
Double scale
Find third proportional to 206 and 413
Similar ratio
Find third proportional to 306 and 612.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.00) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.