Home / 54.45-75.15-29.90

Finding the Fourth Proportional to 54.45, 75.15 and 29.90

Calculator

Solution

The fourth proportional to 54.45, 75.15 and 29.90 is: 41.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.45 : 75.15 = 29.90 : x
  2. Step 2: Convert to fraction form
    54.45/75.15 = 29.90/x
  3. Step 3: Cross multiply
    54.45x = 75.15 × 29.90
  4. Step 4: Simplify right side
    54.45x = 2,246.50
  5. Step 5: Solve for x
    x = 2,246.50/54.45
  6. Step 6: Final answer
    x = 41.26

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.