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Finding the Fourth Proportional to 994.77, 1,374.17 and 886.41

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Solution

The fourth proportional to 994.77, 1,374.17 and 886.41 is: 1,224.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.77 : 1,374.17 = 886.41 : x
  2. Step 2: Convert to fraction form
    994.77/1,374.17 = 886.41/x
  3. Step 3: Cross multiply
    994.77x = 1,374.17 × 886.41
  4. Step 4: Simplify right side
    994.77x = 1,218,073.60
  5. Step 5: Solve for x
    x = 1,218,073.60/994.77
  6. Step 6: Final answer
    x = 1,224.48

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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.