Home / 305-420.84-188.52

Finding the Fourth Proportional to 305, 420.84 and 188.52

Calculator

Solution

The fourth proportional to 305, 420.84 and 188.52 is: 260.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    305 : 420.84 = 188.52 : x
  2. Step 2: Convert to fraction form
    305/420.84 = 188.52/x
  3. Step 3: Cross multiply
    305x = 420.84 × 188.52
  4. Step 4: Simplify right side
    305x = 79,336.76
  5. Step 5: Solve for x
    x = 79,336.76/305
  6. Step 6: Final answer
    x = 260.12

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.