Home / 671.76-1,007.04-261.18

Finding the Fourth Proportional to 671.76, 1,007.04 and 261.18

Calculator

Solution

The fourth proportional to 671.76, 1,007.04 and 261.18 is: 391.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.76 : 1,007.04 = 261.18 : x
  2. Step 2: Convert to fraction form
    671.76/1,007.04 = 261.18/x
  3. Step 3: Cross multiply
    671.76x = 1,007.04 × 261.18
  4. Step 4: Simplify right side
    671.76x = 263,018.71
  5. Step 5: Solve for x
    x = 263,018.71/671.76
  6. Step 6: Final answer
    x = 391.54

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.