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Finding the Fourth Proportional to 802.22, 1,107.30 and 521.96

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Solution

The fourth proportional to 802.22, 1,107.30 and 521.96 is: 720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.22 : 1,107.30 = 521.96 : x
  2. Step 2: Convert to fraction form
    802.22/1,107.30 = 521.96/x
  3. Step 3: Cross multiply
    802.22x = 1,107.30 × 521.96
  4. Step 4: Simplify right side
    802.22x = 577,960.77
  5. Step 5: Solve for x
    x = 577,960.77/802.22
  6. Step 6: Final answer
    x = 720.46

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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.