Home / 736.90-1,016.92-400.79

Finding the Fourth Proportional to 736.90, 1,016.92 and 400.79

Calculator

Solution

The fourth proportional to 736.90, 1,016.92 and 400.79 is: 553.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    736.90 : 1,016.92 = 400.79 : x
  2. Step 2: Convert to fraction form
    736.90/1,016.92 = 400.79/x
  3. Step 3: Cross multiply
    736.90x = 1,016.92 × 400.79
  4. Step 4: Simplify right side
    736.90x = 407,574.41
  5. Step 5: Solve for x
    x = 407,574.41/736.90
  6. Step 6: Final answer
    x = 553.10

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.