Home / 456.86-685.69-213.52

Finding the Fourth Proportional to 456.86, 685.69 and 213.52

Calculator

Solution

The fourth proportional to 456.86, 685.69 and 213.52 is: 320.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.86 : 685.69 = 213.52 : x
  2. Step 2: Convert to fraction form
    456.86/685.69 = 213.52/x
  3. Step 3: Cross multiply
    456.86x = 685.69 × 213.52
  4. Step 4: Simplify right side
    456.86x = 146,405.10
  5. Step 5: Solve for x
    x = 146,405.10/456.86
  6. Step 6: Final answer
    x = 320.46

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.