Home / 247.16-369.33-215.90

Finding the Fourth Proportional to 247.16, 369.33 and 215.90

Calculator

Solution

The fourth proportional to 247.16, 369.33 and 215.90 is: 322.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.16 : 369.33 = 215.90 : x
  2. Step 2: Convert to fraction form
    247.16/369.33 = 215.90/x
  3. Step 3: Cross multiply
    247.16x = 369.33 × 215.90
  4. Step 4: Simplify right side
    247.16x = 79,736.50
  5. Step 5: Solve for x
    x = 79,736.50/247.16
  6. Step 6: Final answer
    x = 322.62

Related Problems

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.