Home / 901.28-1,243.49-528.01

Finding the Fourth Proportional to 901.28, 1,243.49 and 528.01

Calculator

Solution

The fourth proportional to 901.28, 1,243.49 and 528.01 is: 728.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.28 : 1,243.49 = 528.01 : x
  2. Step 2: Convert to fraction form
    901.28/1,243.49 = 528.01/x
  3. Step 3: Cross multiply
    901.28x = 1,243.49 × 528.01
  4. Step 4: Simplify right side
    901.28x = 656,569.41
  5. Step 5: Solve for x
    x = 656,569.41/901.28
  6. Step 6: Final answer
    x = 728.48

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.