Home / 1,146.14-1,719.21-280.46

Finding the Fourth Proportional to 1,146.14, 1,719.21 and 280.46

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Solution

The fourth proportional to 1,146.14, 1,719.21 and 280.46 is: 420.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,146.14 : 1,719.21 = 280.46 : x
  2. Step 2: Convert to fraction form
    1,146.14/1,719.21 = 280.46/x
  3. Step 3: Cross multiply
    1,146.14x = 1,719.21 × 280.46
  4. Step 4: Simplify right side
    1,146.14x = 482,161.04
  5. Step 5: Solve for x
    x = 482,161.04/1,146.14
  6. Step 6: Final answer
    x = 420.68

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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.