Home / 763.09-1,145.19-276.18

Finding the Fourth Proportional to 763.09, 1,145.19 and 276.18

Calculator

Solution

The fourth proportional to 763.09, 1,145.19 and 276.18 is: 414.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    763.09 : 1,145.19 = 276.18 : x
  2. Step 2: Convert to fraction form
    763.09/1,145.19 = 276.18/x
  3. Step 3: Cross multiply
    763.09x = 1,145.19 × 276.18
  4. Step 4: Simplify right side
    763.09x = 316,271.47
  5. Step 5: Solve for x
    x = 316,271.47/763.09
  6. Step 6: Final answer
    x = 414.46

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.