Home / 390.84-586.47-283.52

Finding the Fourth Proportional to 390.84, 586.47 and 283.52

Calculator

Solution

The fourth proportional to 390.84, 586.47 and 283.52 is: 425.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    390.84 : 586.47 = 283.52 : x
  2. Step 2: Convert to fraction form
    390.84/586.47 = 283.52/x
  3. Step 3: Cross multiply
    390.84x = 586.47 × 283.52
  4. Step 4: Simplify right side
    390.84x = 166,273.80
  5. Step 5: Solve for x
    x = 166,273.80/390.84
  6. Step 6: Final answer
    x = 425.42

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.