Home / 158-378

Finding the Third Proportional to 158 and 378

Calculator

Solution

The third proportional to 158 and 378 is: 904.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    158 : 378 = 378 : x
  2. Step 2: Convert to fraction form
    158/378 = 378/x
  3. Step 3: Cross multiply
    158x = 378 × 378
  4. Step 4: Simplify right side
    158x = 142,884
  5. Step 5: Solve for x
    x = 142,884/158
  6. Step 6: Final answer
    x = 904.33

Related Problems

Find third proportional to 79 and 189
Half scale
Find third proportional to 316 and 756
Double scale
Find third proportional to 160 and 383
Similar ratio
Find third proportional to 237 and 567
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.