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Finding the Fourth Proportional to 355.40, 535.82 and 350.79

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Solution

The fourth proportional to 355.40, 535.82 and 350.79 is: 528.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.40 : 535.82 = 350.79 : x
  2. Step 2: Convert to fraction form
    355.40/535.82 = 350.79/x
  3. Step 3: Cross multiply
    355.40x = 535.82 × 350.79
  4. Step 4: Simplify right side
    355.40x = 187,958.54
  5. Step 5: Solve for x
    x = 187,958.54/355.40
  6. Step 6: Final answer
    x = 528.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.