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Finding the Fourth Proportional to 1,636.88, 2,455.25 and 404.25

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Solution

The fourth proportional to 1,636.88, 2,455.25 and 404.25 is: 606.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.88 : 2,455.25 = 404.25 : x
  2. Step 2: Convert to fraction form
    1,636.88/2,455.25 = 404.25/x
  3. Step 3: Cross multiply
    1,636.88x = 2,455.25 × 404.25
  4. Step 4: Simplify right side
    1,636.88x = 992,545.72
  5. Step 5: Solve for x
    x = 992,545.72/1,636.88
  6. Step 6: Final answer
    x = 606.37

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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.