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Finding the Fourth Proportional to 355.30, 529.91 and 326.14

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Solution

The fourth proportional to 355.30, 529.91 and 326.14 is: 486.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.30 : 529.91 = 326.14 : x
  2. Step 2: Convert to fraction form
    355.30/529.91 = 326.14/x
  3. Step 3: Cross multiply
    355.30x = 529.91 × 326.14
  4. Step 4: Simplify right side
    355.30x = 172,824.85
  5. Step 5: Solve for x
    x = 172,824.85/355.30
  6. Step 6: Final answer
    x = 486.42

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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.