Home / 450.38-621.47-253.87

Finding the Fourth Proportional to 450.38, 621.47 and 253.87

Calculator

Solution

The fourth proportional to 450.38, 621.47 and 253.87 is: 350.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.38 : 621.47 = 253.87 : x
  2. Step 2: Convert to fraction form
    450.38/621.47 = 253.87/x
  3. Step 3: Cross multiply
    450.38x = 621.47 × 253.87
  4. Step 4: Simplify right side
    450.38x = 157,771.67
  5. Step 5: Solve for x
    x = 157,771.67/450.38
  6. Step 6: Final answer
    x = 350.31

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.