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Finding the Fourth Proportional to 355.82, 487.78 and 350.14

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Solution

The fourth proportional to 355.82, 487.78 and 350.14 is: 479.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.82 : 487.78 = 350.14 : x
  2. Step 2: Convert to fraction form
    355.82/487.78 = 350.14/x
  3. Step 3: Cross multiply
    355.82x = 487.78 × 350.14
  4. Step 4: Simplify right side
    355.82x = 170,791.29
  5. Step 5: Solve for x
    x = 170,791.29/355.82
  6. Step 6: Final answer
    x = 479.99

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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.