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Finding the Fourth Proportional to 355.38, 529.50 and 336.78

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Solution

The fourth proportional to 355.38, 529.50 and 336.78 is: 501.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.38 : 529.50 = 336.78 : x
  2. Step 2: Convert to fraction form
    355.38/529.50 = 336.78/x
  3. Step 3: Cross multiply
    355.38x = 529.50 × 336.78
  4. Step 4: Simplify right side
    355.38x = 178,325.01
  5. Step 5: Solve for x
    x = 178,325.01/355.38
  6. Step 6: Final answer
    x = 501.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.