Home / 579-666

Finding the Third Proportional to 579 and 666

Calculator

Solution

The third proportional to 579 and 666 is: 766.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    579 : 666 = 666 : x
  2. Step 2: Convert to fraction form
    579/666 = 666/x
  3. Step 3: Cross multiply
    579x = 666 × 666
  4. Step 4: Simplify right side
    579x = 443,556
  5. Step 5: Solve for x
    x = 443,556/579
  6. Step 6: Final answer
    x = 766.07

Related Problems

Find third proportional to 289.50 and 333
Half scale
Find third proportional to 1,158 and 1,332
Double scale
Find third proportional to 581 and 668
Similar ratio
Find third proportional to 868.50 and 999
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.