Home / 442.21-663.11-198.58

Finding the Fourth Proportional to 442.21, 663.11 and 198.58

Calculator

Solution

The fourth proportional to 442.21, 663.11 and 198.58 is: 297.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.21 : 663.11 = 198.58 : x
  2. Step 2: Convert to fraction form
    442.21/663.11 = 198.58/x
  3. Step 3: Cross multiply
    442.21x = 663.11 × 198.58
  4. Step 4: Simplify right side
    442.21x = 131,678.41
  5. Step 5: Solve for x
    x = 131,678.41/442.21
  6. Step 6: Final answer
    x = 297.77

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.