Home / 954.78-1,317.53-561.72

Finding the Fourth Proportional to 954.78, 1,317.53 and 561.72

Calculator

Solution

The fourth proportional to 954.78, 1,317.53 and 561.72 is: 775.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.78 : 1,317.53 = 561.72 : x
  2. Step 2: Convert to fraction form
    954.78/1,317.53 = 561.72/x
  3. Step 3: Cross multiply
    954.78x = 1,317.53 × 561.72
  4. Step 4: Simplify right side
    954.78x = 740,082.95
  5. Step 5: Solve for x
    x = 740,082.95/954.78
  6. Step 6: Final answer
    x = 775.13

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.