Home / 258.72-387.84-156

Finding the Fourth Proportional to 258.72, 387.84 and 156

Calculator

Solution

The fourth proportional to 258.72, 387.84 and 156 is: 233.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    258.72 : 387.84 = 156 : x
  2. Step 2: Convert to fraction form
    258.72/387.84 = 156/x
  3. Step 3: Cross multiply
    258.72x = 387.84 × 156
  4. Step 4: Simplify right side
    258.72x = 60,503.04
  5. Step 5: Solve for x
    x = 60,503.04/258.72
  6. Step 6: Final answer
    x = 233.86

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.