Home / 482.16-665.46-285.78

Finding the Fourth Proportional to 482.16, 665.46 and 285.78

Calculator

Solution

The fourth proportional to 482.16, 665.46 and 285.78 is: 394.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.16 : 665.46 = 285.78 : x
  2. Step 2: Convert to fraction form
    482.16/665.46 = 285.78/x
  3. Step 3: Cross multiply
    482.16x = 665.46 × 285.78
  4. Step 4: Simplify right side
    482.16x = 190,175.16
  5. Step 5: Solve for x
    x = 190,175.16/482.16
  6. Step 6: Final answer
    x = 394.42

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.