Home / 255.24-382.79-72.65

Finding the Fourth Proportional to 255.24, 382.79 and 72.65

Calculator

Solution

The fourth proportional to 255.24, 382.79 and 72.65 is: 108.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.24 : 382.79 = 72.65 : x
  2. Step 2: Convert to fraction form
    255.24/382.79 = 72.65/x
  3. Step 3: Cross multiply
    255.24x = 382.79 × 72.65
  4. Step 4: Simplify right side
    255.24x = 27,807.42
  5. Step 5: Solve for x
    x = 27,807.42/255.24
  6. Step 6: Final answer
    x = 108.95

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.