Home / 390.68-586.06-102.12

Finding the Fourth Proportional to 390.68, 586.06 and 102.12

Calculator

Solution

The fourth proportional to 390.68, 586.06 and 102.12 is: 153.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    390.68 : 586.06 = 102.12 : x
  2. Step 2: Convert to fraction form
    390.68/586.06 = 102.12/x
  3. Step 3: Cross multiply
    390.68x = 586.06 × 102.12
  4. Step 4: Simplify right side
    390.68x = 59,848.45
  5. Step 5: Solve for x
    x = 59,848.45/390.68
  6. Step 6: Final answer
    x = 153.19

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.