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Finding the Fourth Proportional to 1,636.91, 2,455.35 and 404.33

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Solution

The fourth proportional to 1,636.91, 2,455.35 and 404.33 is: 606.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.91 : 2,455.35 = 404.33 : x
  2. Step 2: Convert to fraction form
    1,636.91/2,455.35 = 404.33/x
  3. Step 3: Cross multiply
    1,636.91x = 2,455.35 × 404.33
  4. Step 4: Simplify right side
    1,636.91x = 992,771.67
  5. Step 5: Solve for x
    x = 992,771.67/1,636.91
  6. Step 6: Final answer
    x = 606.49

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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.