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Finding the Fourth Proportional to 802.21, 1,107.05 and 452.89

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Solution

The fourth proportional to 802.21, 1,107.05 and 452.89 is: 624.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.21 : 1,107.05 = 452.89 : x
  2. Step 2: Convert to fraction form
    802.21/1,107.05 = 452.89/x
  3. Step 3: Cross multiply
    802.21x = 1,107.05 × 452.89
  4. Step 4: Simplify right side
    802.21x = 501,371.87
  5. Step 5: Solve for x
    x = 501,371.87/802.21
  6. Step 6: Final answer
    x = 624.99

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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.