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Finding the Fourth Proportional to 935.85, 1,394.44 and 893.94

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Solution

The fourth proportional to 935.85, 1,394.44 and 893.94 is: 1,331.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.85 : 1,394.44 = 893.94 : x
  2. Step 2: Convert to fraction form
    935.85/1,394.44 = 893.94/x
  3. Step 3: Cross multiply
    935.85x = 1,394.44 × 893.94
  4. Step 4: Simplify right side
    935.85x = 1,246,540.74
  5. Step 5: Solve for x
    x = 1,246,540.74/935.85
  6. Step 6: Final answer
    x = 1,331.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.