Home / 205.72-308.55-61.41

Finding the Fourth Proportional to 205.72, 308.55 and 61.41

Calculator

Solution

The fourth proportional to 205.72, 308.55 and 61.41 is: 92.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205.72 : 308.55 = 61.41 : x
  2. Step 2: Convert to fraction form
    205.72/308.55 = 61.41/x
  3. Step 3: Cross multiply
    205.72x = 308.55 × 61.41
  4. Step 4: Simplify right side
    205.72x = 18,946.36
  5. Step 5: Solve for x
    x = 18,946.36/205.72
  6. Step 6: Final answer
    x = 92.10

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.