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Finding the Fourth Proportional to 355.86, 486.74 and 350.19

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Solution

The fourth proportional to 355.86, 486.74 and 350.19 is: 478.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.86 : 486.74 = 350.19 : x
  2. Step 2: Convert to fraction form
    355.86/486.74 = 350.19/x
  3. Step 3: Cross multiply
    355.86x = 486.74 × 350.19
  4. Step 4: Simplify right side
    355.86x = 170,449.73
  5. Step 5: Solve for x
    x = 170,449.73/355.86
  6. Step 6: Final answer
    x = 478.98

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.