Home / 724.64-1,087.29-359.34

Finding the Fourth Proportional to 724.64, 1,087.29 and 359.34

Calculator

Solution

The fourth proportional to 724.64, 1,087.29 and 359.34 is: 539.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.64 : 1,087.29 = 359.34 : x
  2. Step 2: Convert to fraction form
    724.64/1,087.29 = 359.34/x
  3. Step 3: Cross multiply
    724.64x = 1,087.29 × 359.34
  4. Step 4: Simplify right side
    724.64x = 390,702.71
  5. Step 5: Solve for x
    x = 390,702.71/724.64
  6. Step 6: Final answer
    x = 539.17

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.