Home / 404.25-486.75

Finding the Third Proportional to 404.25 and 486.75

Calculator

Solution

The third proportional to 404.25 and 486.75 is: 586.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.25 : 486.75 = 486.75 : x
  2. Step 2: Convert to fraction form
    404.25/486.75 = 486.75/x
  3. Step 3: Cross multiply
    404.25x = 486.75 × 486.75
  4. Step 4: Simplify right side
    404.25x = 236,925.56
  5. Step 5: Solve for x
    x = 236,925.56/404.25
  6. Step 6: Final answer
    x = 586.09

Related Problems

Find third proportional to 202.13 and 243.38
Half scale
Find third proportional to 808.50 and 973.50
Double scale
Find third proportional to 406 and 489
Similar ratio
Find third proportional to 606.38 and 730.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.