Home / 1,146.20-1,719.18-324.56

Finding the Fourth Proportional to 1,146.20, 1,719.18 and 324.56

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Solution

The fourth proportional to 1,146.20, 1,719.18 and 324.56 is: 486.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146.20 : 1,719.18 = 324.56 : x
  2. Step 2: Convert to fraction form
    1,146.20/1,719.18 = 324.56/x
  3. Step 3: Cross multiply
    1,146.20x = 1,719.18 × 324.56
  4. Step 4: Simplify right side
    1,146.20x = 557,977.06
  5. Step 5: Solve for x
    x = 557,977.06/1,146.20
  6. Step 6: Final answer
    x = 486.81

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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.