Home / 272.92-409.30-90.27

Finding the Fourth Proportional to 272.92, 409.30 and 90.27

Calculator

Solution

The fourth proportional to 272.92, 409.30 and 90.27 is: 135.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.92 : 409.30 = 90.27 : x
  2. Step 2: Convert to fraction form
    272.92/409.30 = 90.27/x
  3. Step 3: Cross multiply
    272.92x = 409.30 × 90.27
  4. Step 4: Simplify right side
    272.92x = 36,947.51
  5. Step 5: Solve for x
    x = 36,947.51/272.92
  6. Step 6: Final answer
    x = 135.38

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.