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Finding the Fourth Proportional to 802.44, 1,107.55 and 522.18

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Solution

The fourth proportional to 802.44, 1,107.55 and 522.18 is: 720.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.44 : 1,107.55 = 522.18 : x
  2. Step 2: Convert to fraction form
    802.44/1,107.55 = 522.18/x
  3. Step 3: Cross multiply
    802.44x = 1,107.55 × 522.18
  4. Step 4: Simplify right side
    802.44x = 578,340.46
  5. Step 5: Solve for x
    x = 578,340.46/802.44
  6. Step 6: Final answer
    x = 720.73

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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.