Home / 1,272.54-1,909.71-450.81

Finding the Fourth Proportional to 1,272.54, 1,909.71 and 450.81

Calculator

Solution

The fourth proportional to 1,272.54, 1,909.71 and 450.81 is: 676.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.54 : 1,909.71 = 450.81 : x
  2. Step 2: Convert to fraction form
    1,272.54/1,909.71 = 450.81/x
  3. Step 3: Cross multiply
    1,272.54x = 1,909.71 × 450.81
  4. Step 4: Simplify right side
    1,272.54x = 860,916.37
  5. Step 5: Solve for x
    x = 860,916.37/1,272.54
  6. Step 6: Final answer
    x = 676.53

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.