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Finding the Fourth Proportional to 1,382.34, 2,072.86 and 504.23

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Solution

The fourth proportional to 1,382.34, 2,072.86 and 504.23 is: 756.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382.34 : 2,072.86 = 504.23 : x
  2. Step 2: Convert to fraction form
    1,382.34/2,072.86 = 504.23/x
  3. Step 3: Cross multiply
    1,382.34x = 2,072.86 × 504.23
  4. Step 4: Simplify right side
    1,382.34x = 1,045,186.57
  5. Step 5: Solve for x
    x = 1,045,186.57/1,382.34
  6. Step 6: Final answer
    x = 756.10

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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.