Home / 190-318.75

Finding the Third Proportional to 190 and 318.75

Calculator

Solution

The third proportional to 190 and 318.75 is: 534.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    190 : 318.75 = 318.75 : x
  2. Step 2: Convert to fraction form
    190/318.75 = 318.75/x
  3. Step 3: Cross multiply
    190x = 318.75 × 318.75
  4. Step 4: Simplify right side
    190x = 101,601.56
  5. Step 5: Solve for x
    x = 101,601.56/190
  6. Step 6: Final answer
    x = 534.75

Related Problems

Find third proportional to 95 and 159.38
Half scale
Find third proportional to 380 and 637.50
Double scale
Find third proportional to 192 and 322
Similar ratio
Find third proportional to 285 and 478.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.