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Finding the Fourth Proportional to 2,366.91, 3,549.96 and 905.31

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Solution

The fourth proportional to 2,366.91, 3,549.96 and 905.31 is: 1,357.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,366.91 : 3,549.96 = 905.31 : x
  2. Step 2: Convert to fraction form
    2,366.91/3,549.96 = 905.31/x
  3. Step 3: Cross multiply
    2,366.91x = 3,549.96 × 905.31
  4. Step 4: Simplify right side
    2,366.91x = 3,213,814.29
  5. Step 5: Solve for x
    x = 3,213,814.29/2,366.91
  6. Step 6: Final answer
    x = 1,357.81

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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.