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Finding the Fourth Proportional to 404.36, 606.48 and 187.92

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Solution

The fourth proportional to 404.36, 606.48 and 187.92 is: 281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.36 : 606.48 = 187.92 : x
  2. Step 2: Convert to fraction form
    404.36/606.48 = 187.92/x
  3. Step 3: Cross multiply
    404.36x = 606.48 × 187.92
  4. Step 4: Simplify right side
    404.36x = 113,969.72
  5. Step 5: Solve for x
    x = 113,969.72/404.36
  6. Step 6: Final answer
    x = 281.85

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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.