Home / 389.36-537.08-231.89

Finding the Fourth Proportional to 389.36, 537.08 and 231.89

Calculator

Solution

The fourth proportional to 389.36, 537.08 and 231.89 is: 319.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    389.36 : 537.08 = 231.89 : x
  2. Step 2: Convert to fraction form
    389.36/537.08 = 231.89/x
  3. Step 3: Cross multiply
    389.36x = 537.08 × 231.89
  4. Step 4: Simplify right side
    389.36x = 124,539.64
  5. Step 5: Solve for x
    x = 124,539.64/389.36
  6. Step 6: Final answer
    x = 319.86

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.