Home / 450-619.50

Finding the Third Proportional to 450 and 619.50

Calculator

Solution

The third proportional to 450 and 619.50 is: 852.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    450 : 619.50 = 619.50 : x
  2. Step 2: Convert to fraction form
    450/619.50 = 619.50/x
  3. Step 3: Cross multiply
    450x = 619.50 × 619.50
  4. Step 4: Simplify right side
    450x = 383,780.25
  5. Step 5: Solve for x
    x = 383,780.25/450
  6. Step 6: Final answer
    x = 852.85

Related Problems

Find third proportional to 225 and 309.75
Half scale
Find third proportional to 900 and 1,239
Double scale
Find third proportional to 452 and 622
Similar ratio
Find third proportional to 675 and 929.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.