Home / 279.40-385.64-168.95

Finding the Fourth Proportional to 279.40, 385.64 and 168.95

Calculator

Solution

The fourth proportional to 279.40, 385.64 and 168.95 is: 233.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.40 : 385.64 = 168.95 : x
  2. Step 2: Convert to fraction form
    279.40/385.64 = 168.95/x
  3. Step 3: Cross multiply
    279.40x = 385.64 × 168.95
  4. Step 4: Simplify right side
    279.40x = 65,151.11
  5. Step 5: Solve for x
    x = 65,151.11/279.40
  6. Step 6: Final answer
    x = 233.18

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.