Home / 366.75-642.38

Finding the Third Proportional to 366.75 and 642.38

Calculator

Solution

The third proportional to 366.75 and 642.38 is: 1,125.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.75 : 642.38 = 642.38 : x
  2. Step 2: Convert to fraction form
    366.75/642.38 = 642.38/x
  3. Step 3: Cross multiply
    366.75x = 642.38 × 642.38
  4. Step 4: Simplify right side
    366.75x = 412,645.64
  5. Step 5: Solve for x
    x = 412,645.64/366.75
  6. Step 6: Final answer
    x = 1,125.14

Related Problems

Find third proportional to 183.38 and 321.19
Half scale
Find third proportional to 733.50 and 1,284.75
Double scale
Find third proportional to 369 and 646
Similar ratio
Find third proportional to 550.13 and 963.56
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.