Home / 1,286.18-1,928.76-464.20

Finding the Fourth Proportional to 1,286.18, 1,928.76 and 464.20

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Solution

The fourth proportional to 1,286.18, 1,928.76 and 464.20 is: 696.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.18 : 1,928.76 = 464.20 : x
  2. Step 2: Convert to fraction form
    1,286.18/1,928.76 = 464.20/x
  3. Step 3: Cross multiply
    1,286.18x = 1,928.76 × 464.20
  4. Step 4: Simplify right side
    1,286.18x = 895,330.39
  5. Step 5: Solve for x
    x = 895,330.39/1,286.18
  6. Step 6: Final answer
    x = 696.12

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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.