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Finding the Fourth Proportional to 802.60, 1,107.46 and 453.28

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Solution

The fourth proportional to 802.60, 1,107.46 and 453.28 is: 625.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.60 : 1,107.46 = 453.28 : x
  2. Step 2: Convert to fraction form
    802.60/1,107.46 = 453.28/x
  3. Step 3: Cross multiply
    802.60x = 1,107.46 × 453.28
  4. Step 4: Simplify right side
    802.60x = 501,989.47
  5. Step 5: Solve for x
    x = 501,989.47/802.60
  6. Step 6: Final answer
    x = 625.45

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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.