Home / 30.49-45.63-20.34

Finding the Fourth Proportional to 30.49, 45.63 and 20.34

Calculator

Solution

The fourth proportional to 30.49, 45.63 and 20.34 is: 30.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30.49 : 45.63 = 20.34 : x
  2. Step 2: Convert to fraction form
    30.49/45.63 = 20.34/x
  3. Step 3: Cross multiply
    30.49x = 45.63 × 20.34
  4. Step 4: Simplify right side
    30.49x = 928.11
  5. Step 5: Solve for x
    x = 928.11/30.49
  6. Step 6: Final answer
    x = 30.44

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.