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Finding the Fourth Proportional to 355.73, 528.80 and 344.79

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Solution

The fourth proportional to 355.73, 528.80 and 344.79 is: 512.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.73 : 528.80 = 344.79 : x
  2. Step 2: Convert to fraction form
    355.73/528.80 = 344.79/x
  3. Step 3: Cross multiply
    355.73x = 528.80 × 344.79
  4. Step 4: Simplify right side
    355.73x = 182,323.23
  5. Step 5: Solve for x
    x = 182,323.23/355.73
  6. Step 6: Final answer
    x = 512.54

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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.