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Finding the Fourth Proportional to 994.76, 1,365.28 and 911.36

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Solution

The fourth proportional to 994.76, 1,365.28 and 911.36 is: 1,250.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.76 : 1,365.28 = 911.36 : x
  2. Step 2: Convert to fraction form
    994.76/1,365.28 = 911.36/x
  3. Step 3: Cross multiply
    994.76x = 1,365.28 × 911.36
  4. Step 4: Simplify right side
    994.76x = 1,244,261.58
  5. Step 5: Solve for x
    x = 1,244,261.58/994.76
  6. Step 6: Final answer
    x = 1,250.82

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.