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Finding the Fourth Proportional to 1,658, 2,287.96 and 994.73

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Solution

The fourth proportional to 1,658, 2,287.96 and 994.73 is: 1,372.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,658 : 2,287.96 = 994.73 : x
  2. Step 2: Convert to fraction form
    1,658/2,287.96 = 994.73/x
  3. Step 3: Cross multiply
    1,658x = 2,287.96 × 994.73
  4. Step 4: Simplify right side
    1,658x = 2,275,886.04
  5. Step 5: Solve for x
    x = 2,275,886.04/1,658
  6. Step 6: Final answer
    x = 1,372.67

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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.