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Finding the Fourth Proportional to 351.93, 527.08 and 339.78

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Solution

The fourth proportional to 351.93, 527.08 and 339.78 is: 508.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.93 : 527.08 = 339.78 : x
  2. Step 2: Convert to fraction form
    351.93/527.08 = 339.78/x
  3. Step 3: Cross multiply
    351.93x = 527.08 × 339.78
  4. Step 4: Simplify right side
    351.93x = 179,091.24
  5. Step 5: Solve for x
    x = 179,091.24/351.93
  6. Step 6: Final answer
    x = 508.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.