Home / 261.18-392.04-213.66

Finding the Fourth Proportional to 261.18, 392.04 and 213.66

Calculator

Solution

The fourth proportional to 261.18, 392.04 and 213.66 is: 320.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.18 : 392.04 = 213.66 : x
  2. Step 2: Convert to fraction form
    261.18/392.04 = 213.66/x
  3. Step 3: Cross multiply
    261.18x = 392.04 × 213.66
  4. Step 4: Simplify right side
    261.18x = 83,763.27
  5. Step 5: Solve for x
    x = 83,763.27/261.18
  6. Step 6: Final answer
    x = 320.71

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.