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Finding the Fourth Proportional to 873.11, 1,203.05 and 802.37

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Solution

The fourth proportional to 873.11, 1,203.05 and 802.37 is: 1,105.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.11 : 1,203.05 = 802.37 : x
  2. Step 2: Convert to fraction form
    873.11/1,203.05 = 802.37/x
  3. Step 3: Cross multiply
    873.11x = 1,203.05 × 802.37
  4. Step 4: Simplify right side
    873.11x = 965,296.24
  5. Step 5: Solve for x
    x = 965,296.24/873.11
  6. Step 6: Final answer
    x = 1,105.58

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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.