Home / 314.71-434.47-221.54

Finding the Fourth Proportional to 314.71, 434.47 and 221.54

Calculator

Solution

The fourth proportional to 314.71, 434.47 and 221.54 is: 305.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.71 : 434.47 = 221.54 : x
  2. Step 2: Convert to fraction form
    314.71/434.47 = 221.54/x
  3. Step 3: Cross multiply
    314.71x = 434.47 × 221.54
  4. Step 4: Simplify right side
    314.71x = 96,252.48
  5. Step 5: Solve for x
    x = 96,252.48/314.71
  6. Step 6: Final answer
    x = 305.85

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.