Home / 1,286.55-1,929.15-464.70

Finding the Fourth Proportional to 1,286.55, 1,929.15 and 464.70

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Solution

The fourth proportional to 1,286.55, 1,929.15 and 464.70 is: 696.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286.55 : 1,929.15 = 464.70 : x
  2. Step 2: Convert to fraction form
    1,286.55/1,929.15 = 464.70/x
  3. Step 3: Cross multiply
    1,286.55x = 1,929.15 × 464.70
  4. Step 4: Simplify right side
    1,286.55x = 896,476.01
  5. Step 5: Solve for x
    x = 896,476.01/1,286.55
  6. Step 6: Final answer
    x = 696.81

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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.