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Finding the Fourth Proportional to 355.37, 529.70 and 338.04

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Solution

The fourth proportional to 355.37, 529.70 and 338.04 is: 503.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.37 : 529.70 = 338.04 : x
  2. Step 2: Convert to fraction form
    355.37/529.70 = 338.04/x
  3. Step 3: Cross multiply
    355.37x = 529.70 × 338.04
  4. Step 4: Simplify right side
    355.37x = 179,059.79
  5. Step 5: Solve for x
    x = 179,059.79/355.37
  6. Step 6: Final answer
    x = 503.87

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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.