Home / 738.65-1,106.55-661.29

Finding the Fourth Proportional to 738.65, 1,106.55 and 661.29

Calculator

Solution

The fourth proportional to 738.65, 1,106.55 and 661.29 is: 990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.65 : 1,106.55 = 661.29 : x
  2. Step 2: Convert to fraction form
    738.65/1,106.55 = 661.29/x
  3. Step 3: Cross multiply
    738.65x = 1,106.55 × 661.29
  4. Step 4: Simplify right side
    738.65x = 731,750.45
  5. Step 5: Solve for x
    x = 731,750.45/738.65
  6. Step 6: Final answer
    x = 990.67

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.