Home / 949.39-1,310.21-529.78

Finding the Fourth Proportional to 949.39, 1,310.21 and 529.78

Calculator

Solution

The fourth proportional to 949.39, 1,310.21 and 529.78 is: 731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.39 : 1,310.21 = 529.78 : x
  2. Step 2: Convert to fraction form
    949.39/1,310.21 = 529.78/x
  3. Step 3: Cross multiply
    949.39x = 1,310.21 × 529.78
  4. Step 4: Simplify right side
    949.39x = 694,120.40
  5. Step 5: Solve for x
    x = 694,120.40/949.39
  6. Step 6: Final answer
    x = 731.12

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.