Home / 348.75-642.38

Finding the Third Proportional to 348.75 and 642.38

Calculator

Solution

The third proportional to 348.75 and 642.38 is: 1,183.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.75 : 642.38 = 642.38 : x
  2. Step 2: Convert to fraction form
    348.75/642.38 = 642.38/x
  3. Step 3: Cross multiply
    348.75x = 642.38 × 642.38
  4. Step 4: Simplify right side
    348.75x = 412,645.64
  5. Step 5: Solve for x
    x = 412,645.64/348.75
  6. Step 6: Final answer
    x = 1,183.21

Related Problems

Find third proportional to 174.38 and 321.19
Half scale
Find third proportional to 697.50 and 1,284.75
Double scale
Find third proportional to 351 and 646
Similar ratio
Find third proportional to 523.13 and 963.56
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.