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Finding the Fourth Proportional to 2,954.50, 4,431.75 and 902.50

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Solution

The fourth proportional to 2,954.50, 4,431.75 and 902.50 is: 1,353.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,954.50 : 4,431.75 = 902.50 : x
  2. Step 2: Convert to fraction form
    2,954.50/4,431.75 = 902.50/x
  3. Step 3: Cross multiply
    2,954.50x = 4,431.75 × 902.50
  4. Step 4: Simplify right side
    2,954.50x = 3,999,654.38
  5. Step 5: Solve for x
    x = 3,999,654.38/2,954.50
  6. Step 6: Final answer
    x = 1,353.75

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Why These Related Problems?

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