Home / 188.50-309.75

Finding the Third Proportional to 188.50 and 309.75

Calculator

Solution

The third proportional to 188.50 and 309.75 is: 508.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.50 : 309.75 = 309.75 : x
  2. Step 2: Convert to fraction form
    188.50/309.75 = 309.75/x
  3. Step 3: Cross multiply
    188.50x = 309.75 × 309.75
  4. Step 4: Simplify right side
    188.50x = 95,945.06
  5. Step 5: Solve for x
    x = 95,945.06/188.50
  6. Step 6: Final answer
    x = 508.99

Related Problems

Find third proportional to 94.25 and 154.88
Half scale
Find third proportional to 377 and 619.50
Double scale
Find third proportional to 191 and 313
Similar ratio
Find third proportional to 282.75 and 464.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.