Home / 305.87-458.64-123.21

Finding the Fourth Proportional to 305.87, 458.64 and 123.21

Calculator

Solution

The fourth proportional to 305.87, 458.64 and 123.21 is: 184.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.87 : 458.64 = 123.21 : x
  2. Step 2: Convert to fraction form
    305.87/458.64 = 123.21/x
  3. Step 3: Cross multiply
    305.87x = 458.64 × 123.21
  4. Step 4: Simplify right side
    305.87x = 56,509.03
  5. Step 5: Solve for x
    x = 56,509.03/305.87
  6. Step 6: Final answer
    x = 184.75

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.