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Finding the Fourth Proportional to 349.98, 482.94 and 239.55

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Solution

The fourth proportional to 349.98, 482.94 and 239.55 is: 330.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.98 : 482.94 = 239.55 : x
  2. Step 2: Convert to fraction form
    349.98/482.94 = 239.55/x
  3. Step 3: Cross multiply
    349.98x = 482.94 × 239.55
  4. Step 4: Simplify right side
    349.98x = 115,688.28
  5. Step 5: Solve for x
    x = 115,688.28/349.98
  6. Step 6: Final answer
    x = 330.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.