Home / 413.75-618.50

Finding the Third Proportional to 413.75 and 618.50

Calculator

Solution

The third proportional to 413.75 and 618.50 is: 924.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.75 : 618.50 = 618.50 : x
  2. Step 2: Convert to fraction form
    413.75/618.50 = 618.50/x
  3. Step 3: Cross multiply
    413.75x = 618.50 × 618.50
  4. Step 4: Simplify right side
    413.75x = 382,542.25
  5. Step 5: Solve for x
    x = 382,542.25/413.75
  6. Step 6: Final answer
    x = 924.57

Related Problems

Find third proportional to 206.88 and 309.25
Half scale
Find third proportional to 827.50 and 1,237
Double scale
Find third proportional to 416 and 621
Similar ratio
Find third proportional to 620.63 and 927.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.