Home / 658.51-908.90-396.47

Finding the Fourth Proportional to 658.51, 908.90 and 396.47

Calculator

Solution

The fourth proportional to 658.51, 908.90 and 396.47 is: 547.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.51 : 908.90 = 396.47 : x
  2. Step 2: Convert to fraction form
    658.51/908.90 = 396.47/x
  3. Step 3: Cross multiply
    658.51x = 908.90 × 396.47
  4. Step 4: Simplify right side
    658.51x = 360,351.87
  5. Step 5: Solve for x
    x = 360,351.87/658.51
  6. Step 6: Final answer
    x = 547.23

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.