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Finding the Fourth Proportional to 2,133.76, 3,198.76 and 900.50

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Solution

The fourth proportional to 2,133.76, 3,198.76 and 900.50 is: 1,349.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,133.76 : 3,198.76 = 900.50 : x
  2. Step 2: Convert to fraction form
    2,133.76/3,198.76 = 900.50/x
  3. Step 3: Cross multiply
    2,133.76x = 3,198.76 × 900.50
  4. Step 4: Simplify right side
    2,133.76x = 2,880,483.38
  5. Step 5: Solve for x
    x = 2,880,483.38/2,133.76
  6. Step 6: Final answer
    x = 1,349.96

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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.