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Finding the Fourth Proportional to 802.23, 1,107.60 and 747.10

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Solution

The fourth proportional to 802.23, 1,107.60 and 747.10 is: 1,031.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.23 : 1,107.60 = 747.10 : x
  2. Step 2: Convert to fraction form
    802.23/1,107.60 = 747.10/x
  3. Step 3: Cross multiply
    802.23x = 1,107.60 × 747.10
  4. Step 4: Simplify right side
    802.23x = 827,487.96
  5. Step 5: Solve for x
    x = 827,487.96/802.23
  6. Step 6: Final answer
    x = 1,031.48

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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.