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Finding the Fourth Proportional to 355.46, 529.63 and 339.73

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Solution

The fourth proportional to 355.46, 529.63 and 339.73 is: 506.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.46 : 529.63 = 339.73 : x
  2. Step 2: Convert to fraction form
    355.46/529.63 = 339.73/x
  3. Step 3: Cross multiply
    355.46x = 529.63 × 339.73
  4. Step 4: Simplify right side
    355.46x = 179,929.03
  5. Step 5: Solve for x
    x = 179,929.03/355.46
  6. Step 6: Final answer
    x = 506.19

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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.