Home / 413.14-619.77-139.15

Finding the Fourth Proportional to 413.14, 619.77 and 139.15

Calculator

Solution

The fourth proportional to 413.14, 619.77 and 139.15 is: 208.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.14 : 619.77 = 139.15 : x
  2. Step 2: Convert to fraction form
    413.14/619.77 = 139.15/x
  3. Step 3: Cross multiply
    413.14x = 619.77 × 139.15
  4. Step 4: Simplify right side
    413.14x = 86,241.00
  5. Step 5: Solve for x
    x = 86,241.00/413.14
  6. Step 6: Final answer
    x = 208.75

Related Problems

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.