Home / 240-648.75

Finding the Third Proportional to 240 and 648.75

Calculator

Solution

The third proportional to 240 and 648.75 is: 1,753.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    240 : 648.75 = 648.75 : x
  2. Step 2: Convert to fraction form
    240/648.75 = 648.75/x
  3. Step 3: Cross multiply
    240x = 648.75 × 648.75
  4. Step 4: Simplify right side
    240x = 420,876.56
  5. Step 5: Solve for x
    x = 420,876.56/240
  6. Step 6: Final answer
    x = 1,753.65

Related Problems

Find third proportional to 120 and 324.38
Half scale
Find third proportional to 480 and 1,297.50
Double scale
Find third proportional to 242 and 654
Similar ratio
Find third proportional to 360 and 973.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.