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Finding the Fourth Proportional to 355.05, 493.32 and 351.24

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Solution

The fourth proportional to 355.05, 493.32 and 351.24 is: 488.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.05 : 493.32 = 351.24 : x
  2. Step 2: Convert to fraction form
    355.05/493.32 = 351.24/x
  3. Step 3: Cross multiply
    355.05x = 493.32 × 351.24
  4. Step 4: Simplify right side
    355.05x = 173,273.72
  5. Step 5: Solve for x
    x = 173,273.72/355.05
  6. Step 6: Final answer
    x = 488.03

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.