Home / 60.28-90.65

Finding the Third Proportional to 60.28 and 90.65

Calculator

Solution

The third proportional to 60.28 and 90.65 is: 136.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.28 : 90.65 = 90.65 : x
  2. Step 2: Convert to fraction form
    60.28/90.65 = 90.65/x
  3. Step 3: Cross multiply
    60.28x = 90.65 × 90.65
  4. Step 4: Simplify right side
    60.28x = 8,217.49
  5. Step 5: Solve for x
    x = 8,217.49/60.28
  6. Step 6: Final answer
    x = 136.33

Related Problems

Find third proportional to 30.14 and 45.33
Half scale
Find third proportional to 120.55 and 181.30
Double scale
Find third proportional to 62 and 94
Similar ratio
Find third proportional to 90.41 and 135.98
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.