Home / 312.80-469.18-96.38

Finding the Fourth Proportional to 312.80, 469.18 and 96.38

Calculator

Solution

The fourth proportional to 312.80, 469.18 and 96.38 is: 144.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.80 : 469.18 = 96.38 : x
  2. Step 2: Convert to fraction form
    312.80/469.18 = 96.38/x
  3. Step 3: Cross multiply
    312.80x = 469.18 × 96.38
  4. Step 4: Simplify right side
    312.80x = 45,219.57
  5. Step 5: Solve for x
    x = 45,219.57/312.80
  6. Step 6: Final answer
    x = 144.56

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.