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Finding the Fourth Proportional to 994.98, 1,362.46 and 955.77

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Solution

The fourth proportional to 994.98, 1,362.46 and 955.77 is: 1,308.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.98 : 1,362.46 = 955.77 : x
  2. Step 2: Convert to fraction form
    994.98/1,362.46 = 955.77/x
  3. Step 3: Cross multiply
    994.98x = 1,362.46 × 955.77
  4. Step 4: Simplify right side
    994.98x = 1,302,190.90
  5. Step 5: Solve for x
    x = 1,302,190.90/994.98
  6. Step 6: Final answer
    x = 1,308.76

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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.