Home / 255.78-384.30-248.22

Finding the Fourth Proportional to 255.78, 384.30 and 248.22

Calculator

Solution

The fourth proportional to 255.78, 384.30 and 248.22 is: 372.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.78 : 384.30 = 248.22 : x
  2. Step 2: Convert to fraction form
    255.78/384.30 = 248.22/x
  3. Step 3: Cross multiply
    255.78x = 384.30 × 248.22
  4. Step 4: Simplify right side
    255.78x = 95,390.95
  5. Step 5: Solve for x
    x = 95,390.95/255.78
  6. Step 6: Final answer
    x = 372.94

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.