Home / 283.19-390.84-217.58

Finding the Fourth Proportional to 283.19, 390.84 and 217.58

Calculator

Solution

The fourth proportional to 283.19, 390.84 and 217.58 is: 300.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.19 : 390.84 = 217.58 : x
  2. Step 2: Convert to fraction form
    283.19/390.84 = 217.58/x
  3. Step 3: Cross multiply
    283.19x = 390.84 × 217.58
  4. Step 4: Simplify right side
    283.19x = 85,038.97
  5. Step 5: Solve for x
    x = 85,038.97/283.19
  6. Step 6: Final answer
    x = 300.29

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.