Home / 438.94-658.53-130.79

Finding the Fourth Proportional to 438.94, 658.53 and 130.79

Calculator

Solution

The fourth proportional to 438.94, 658.53 and 130.79 is: 196.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.94 : 658.53 = 130.79 : x
  2. Step 2: Convert to fraction form
    438.94/658.53 = 130.79/x
  3. Step 3: Cross multiply
    438.94x = 658.53 × 130.79
  4. Step 4: Simplify right side
    438.94x = 86,125.19
  5. Step 5: Solve for x
    x = 86,125.19/438.94
  6. Step 6: Final answer
    x = 196.21

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.