Home / 726.55-1,089.95-239.74

Finding the Fourth Proportional to 726.55, 1,089.95 and 239.74

Calculator

Solution

The fourth proportional to 726.55, 1,089.95 and 239.74 is: 359.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.55 : 1,089.95 = 239.74 : x
  2. Step 2: Convert to fraction form
    726.55/1,089.95 = 239.74/x
  3. Step 3: Cross multiply
    726.55x = 1,089.95 × 239.74
  4. Step 4: Simplify right side
    726.55x = 261,304.61
  5. Step 5: Solve for x
    x = 261,304.61/726.55
  6. Step 6: Final answer
    x = 359.65

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.