Home / 74.78-103.22-45.29

Finding the Fourth Proportional to 74.78, 103.22 and 45.29

Calculator

Solution

The fourth proportional to 74.78, 103.22 and 45.29 is: 62.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.78 : 103.22 = 45.29 : x
  2. Step 2: Convert to fraction form
    74.78/103.22 = 45.29/x
  3. Step 3: Cross multiply
    74.78x = 103.22 × 45.29
  4. Step 4: Simplify right side
    74.78x = 4,674.09
  5. Step 5: Solve for x
    x = 4,674.09/74.78
  6. Step 6: Final answer
    x = 62.51

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.