Home / 1,314.40-1,971.44-340.57

Finding the Fourth Proportional to 1,314.40, 1,971.44 and 340.57

Calculator

Solution

The fourth proportional to 1,314.40, 1,971.44 and 340.57 is: 510.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,314.40 : 1,971.44 = 340.57 : x
  2. Step 2: Convert to fraction form
    1,314.40/1,971.44 = 340.57/x
  3. Step 3: Cross multiply
    1,314.40x = 1,971.44 × 340.57
  4. Step 4: Simplify right side
    1,314.40x = 671,413.32
  5. Step 5: Solve for x
    x = 671,413.32/1,314.40
  6. Step 6: Final answer
    x = 510.81

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.