Home / 309.61-463.60-217.81

Finding the Fourth Proportional to 309.61, 463.60 and 217.81

Calculator

Solution

The fourth proportional to 309.61, 463.60 and 217.81 is: 326.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    309.61 : 463.60 = 217.81 : x
  2. Step 2: Convert to fraction form
    309.61/463.60 = 217.81/x
  3. Step 3: Cross multiply
    309.61x = 463.60 × 217.81
  4. Step 4: Simplify right side
    309.61x = 100,973.31
  5. Step 5: Solve for x
    x = 100,973.31/309.61
  6. Step 6: Final answer
    x = 326.14

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.