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Finding the Fourth Proportional to 2,405.36, 3,608.52 and 866.48

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Solution

The fourth proportional to 2,405.36, 3,608.52 and 866.48 is: 1,299.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.36 : 3,608.52 = 866.48 : x
  2. Step 2: Convert to fraction form
    2,405.36/3,608.52 = 866.48/x
  3. Step 3: Cross multiply
    2,405.36x = 3,608.52 × 866.48
  4. Step 4: Simplify right side
    2,405.36x = 3,126,710.41
  5. Step 5: Solve for x
    x = 3,126,710.41/2,405.36
  6. Step 6: Final answer
    x = 1,299.89

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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.