Home / 1,005.74-1,508.80-486.10

Finding the Fourth Proportional to 1,005.74, 1,508.80 and 486.10

Calculator

Solution

The fourth proportional to 1,005.74, 1,508.80 and 486.10 is: 729.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005.74 : 1,508.80 = 486.10 : x
  2. Step 2: Convert to fraction form
    1,005.74/1,508.80 = 486.10/x
  3. Step 3: Cross multiply
    1,005.74x = 1,508.80 × 486.10
  4. Step 4: Simplify right side
    1,005.74x = 733,420.14
  5. Step 5: Solve for x
    x = 733,420.14/1,005.74
  6. Step 6: Final answer
    x = 729.24

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.