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Finding the Fourth Proportional to 349.96, 482.54 and 239.48

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Solution

The fourth proportional to 349.96, 482.54 and 239.48 is: 330.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.96 : 482.54 = 239.48 : x
  2. Step 2: Convert to fraction form
    349.96/482.54 = 239.48/x
  3. Step 3: Cross multiply
    349.96x = 482.54 × 239.48
  4. Step 4: Simplify right side
    349.96x = 115,558.68
  5. Step 5: Solve for x
    x = 115,558.68/349.96
  6. Step 6: Final answer
    x = 330.21

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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.