Home / 99.65-149.49-31.16

Finding the Fourth Proportional to 99.65, 149.49 and 31.16

Calculator

Solution

The fourth proportional to 99.65, 149.49 and 31.16 is: 46.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.65 : 149.49 = 31.16 : x
  2. Step 2: Convert to fraction form
    99.65/149.49 = 31.16/x
  3. Step 3: Cross multiply
    99.65x = 149.49 × 31.16
  4. Step 4: Simplify right side
    99.65x = 4,658.48
  5. Step 5: Solve for x
    x = 4,658.48/99.65
  6. Step 6: Final answer
    x = 46.75

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.