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Finding the Fourth Proportional to 404.41, 556.78 and 352.63

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Solution

The fourth proportional to 404.41, 556.78 and 352.63 is: 485.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.41 : 556.78 = 352.63 : x
  2. Step 2: Convert to fraction form
    404.41/556.78 = 352.63/x
  3. Step 3: Cross multiply
    404.41x = 556.78 × 352.63
  4. Step 4: Simplify right side
    404.41x = 196,337.33
  5. Step 5: Solve for x
    x = 196,337.33/404.41
  6. Step 6: Final answer
    x = 485.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.