Home / 306.89-423.87-223.86

Finding the Fourth Proportional to 306.89, 423.87 and 223.86

Calculator

Solution

The fourth proportional to 306.89, 423.87 and 223.86 is: 309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.89 : 423.87 = 223.86 : x
  2. Step 2: Convert to fraction form
    306.89/423.87 = 223.86/x
  3. Step 3: Cross multiply
    306.89x = 423.87 × 223.86
  4. Step 4: Simplify right side
    306.89x = 94,887.54
  5. Step 5: Solve for x
    x = 94,887.54/306.89
  6. Step 6: Final answer
    x = 309.20

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.