Home / 572.56-789.40-397.96

Finding the Fourth Proportional to 572.56, 789.40 and 397.96

Calculator

Solution

The fourth proportional to 572.56, 789.40 and 397.96 is: 548.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.56 : 789.40 = 397.96 : x
  2. Step 2: Convert to fraction form
    572.56/789.40 = 397.96/x
  3. Step 3: Cross multiply
    572.56x = 789.40 × 397.96
  4. Step 4: Simplify right side
    572.56x = 314,149.62
  5. Step 5: Solve for x
    x = 314,149.62/572.56
  6. Step 6: Final answer
    x = 548.68

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.