Home / 985.48-1,359.88-543.38

Finding the Fourth Proportional to 985.48, 1,359.88 and 543.38

Calculator

Solution

The fourth proportional to 985.48, 1,359.88 and 543.38 is: 749.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    985.48 : 1,359.88 = 543.38 : x
  2. Step 2: Convert to fraction form
    985.48/1,359.88 = 543.38/x
  3. Step 3: Cross multiply
    985.48x = 1,359.88 × 543.38
  4. Step 4: Simplify right side
    985.48x = 738,923.44
  5. Step 5: Solve for x
    x = 738,923.44/985.48
  6. Step 6: Final answer
    x = 749.81

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.