Home / 47.20-65.16-34.90

Finding the Fourth Proportional to 47.20, 65.16 and 34.90

Calculator

Solution

The fourth proportional to 47.20, 65.16 and 34.90 is: 48.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.20 : 65.16 = 34.90 : x
  2. Step 2: Convert to fraction form
    47.20/65.16 = 34.90/x
  3. Step 3: Cross multiply
    47.20x = 65.16 × 34.90
  4. Step 4: Simplify right side
    47.20x = 2,274.08
  5. Step 5: Solve for x
    x = 2,274.08/47.20
  6. Step 6: Final answer
    x = 48.18

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.