Home / 863.23-1,292.67-429.25

Finding the Fourth Proportional to 863.23, 1,292.67 and 429.25

Calculator

Solution

The fourth proportional to 863.23, 1,292.67 and 429.25 is: 642.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    863.23 : 1,292.67 = 429.25 : x
  2. Step 2: Convert to fraction form
    863.23/1,292.67 = 429.25/x
  3. Step 3: Cross multiply
    863.23x = 1,292.67 × 429.25
  4. Step 4: Simplify right side
    863.23x = 554,878.60
  5. Step 5: Solve for x
    x = 554,878.60/863.23
  6. Step 6: Final answer
    x = 642.79

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.