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Finding the Fourth Proportional to 1,382.70, 2,072.52 and 560.73

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Solution

The fourth proportional to 1,382.70, 2,072.52 and 560.73 is: 840.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382.70 : 2,072.52 = 560.73 : x
  2. Step 2: Convert to fraction form
    1,382.70/2,072.52 = 560.73/x
  3. Step 3: Cross multiply
    1,382.70x = 2,072.52 × 560.73
  4. Step 4: Simplify right side
    1,382.70x = 1,162,124.14
  5. Step 5: Solve for x
    x = 1,162,124.14/1,382.70
  6. Step 6: Final answer
    x = 840.47

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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.