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Finding the Fourth Proportional to 987.70, 1,481.54 and 294.37

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Solution

The fourth proportional to 987.70, 1,481.54 and 294.37 is: 441.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    987.70 : 1,481.54 = 294.37 : x
  2. Step 2: Convert to fraction form
    987.70/1,481.54 = 294.37/x
  3. Step 3: Cross multiply
    987.70x = 1,481.54 × 294.37
  4. Step 4: Simplify right side
    987.70x = 436,112.05
  5. Step 5: Solve for x
    x = 436,112.05/987.70
  6. Step 6: Final answer
    x = 441.54

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.