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Finding the Fourth Proportional to 1,604.46, 2,214.09 and 905.88

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Solution

The fourth proportional to 1,604.46, 2,214.09 and 905.88 is: 1,250.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,604.46 : 2,214.09 = 905.88 : x
  2. Step 2: Convert to fraction form
    1,604.46/2,214.09 = 905.88/x
  3. Step 3: Cross multiply
    1,604.46x = 2,214.09 × 905.88
  4. Step 4: Simplify right side
    1,604.46x = 2,005,699.85
  5. Step 5: Solve for x
    x = 2,005,699.85/1,604.46
  6. Step 6: Final answer
    x = 1,250.08

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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.