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Finding the Fourth Proportional to 1,636.15, 2,453.95 and 481.63

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Solution

The fourth proportional to 1,636.15, 2,453.95 and 481.63 is: 722.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.15 : 2,453.95 = 481.63 : x
  2. Step 2: Convert to fraction form
    1,636.15/2,453.95 = 481.63/x
  3. Step 3: Cross multiply
    1,636.15x = 2,453.95 × 481.63
  4. Step 4: Simplify right side
    1,636.15x = 1,181,881.26
  5. Step 5: Solve for x
    x = 1,181,881.26/1,636.15
  6. Step 6: Final answer
    x = 722.36

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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.