Home / 149.50-308

Finding the Third Proportional to 149.50 and 308

Calculator

Solution

The third proportional to 149.50 and 308 is: 634.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.50 : 308 = 308 : x
  2. Step 2: Convert to fraction form
    149.50/308 = 308/x
  3. Step 3: Cross multiply
    149.50x = 308 × 308
  4. Step 4: Simplify right side
    149.50x = 94,864
  5. Step 5: Solve for x
    x = 94,864/149.50
  6. Step 6: Final answer
    x = 634.54

Related Problems

Find third proportional to 74.75 and 154
Half scale
Find third proportional to 299 and 616
Double scale
Find third proportional to 152 and 312
Similar ratio
Find third proportional to 224.25 and 462
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.