Home / 915-1,372.58-298.69

Finding the Fourth Proportional to 915, 1,372.58 and 298.69

Calculator

Solution

The fourth proportional to 915, 1,372.58 and 298.69 is: 448.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    915 : 1,372.58 = 298.69 : x
  2. Step 2: Convert to fraction form
    915/1,372.58 = 298.69/x
  3. Step 3: Cross multiply
    915x = 1,372.58 × 298.69
  4. Step 4: Simplify right side
    915x = 409,975.92
  5. Step 5: Solve for x
    x = 409,975.92/915
  6. Step 6: Final answer
    x = 448.06

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.