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Finding the Fourth Proportional to 802.57, 1,107.49 and 453.19

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Solution

The fourth proportional to 802.57, 1,107.49 and 453.19 is: 625.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.57 : 1,107.49 = 453.19 : x
  2. Step 2: Convert to fraction form
    802.57/1,107.49 = 453.19/x
  3. Step 3: Cross multiply
    802.57x = 1,107.49 × 453.19
  4. Step 4: Simplify right side
    802.57x = 501,896.72
  5. Step 5: Solve for x
    x = 501,896.72/802.57
  6. Step 6: Final answer
    x = 625.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.