Home / 74.75-152.75

Finding the Third Proportional to 74.75 and 152.75

Calculator

Solution

The third proportional to 74.75 and 152.75 is: 312.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.75 : 152.75 = 152.75 : x
  2. Step 2: Convert to fraction form
    74.75/152.75 = 152.75/x
  3. Step 3: Cross multiply
    74.75x = 152.75 × 152.75
  4. Step 4: Simplify right side
    74.75x = 23,332.56
  5. Step 5: Solve for x
    x = 23,332.56/74.75
  6. Step 6: Final answer
    x = 312.14

Related Problems

Find third proportional to 37.38 and 76.38
Half scale
Find third proportional to 149.50 and 305.50
Double scale
Find third proportional to 77 and 157
Similar ratio
Find third proportional to 112.13 and 229.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.