Home / 309.66-464.13-172.47

Finding the Fourth Proportional to 309.66, 464.13 and 172.47

Calculator

Solution

The fourth proportional to 309.66, 464.13 and 172.47 is: 258.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    309.66 : 464.13 = 172.47 : x
  2. Step 2: Convert to fraction form
    309.66/464.13 = 172.47/x
  3. Step 3: Cross multiply
    309.66x = 464.13 × 172.47
  4. Step 4: Simplify right side
    309.66x = 80,048.50
  5. Step 5: Solve for x
    x = 80,048.50/309.66
  6. Step 6: Final answer
    x = 258.50

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.