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Finding the Fourth Proportional to 349.66, 482.71 and 239.34

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Solution

The fourth proportional to 349.66, 482.71 and 239.34 is: 330.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.66 : 482.71 = 239.34 : x
  2. Step 2: Convert to fraction form
    349.66/482.71 = 239.34/x
  3. Step 3: Cross multiply
    349.66x = 482.71 × 239.34
  4. Step 4: Simplify right side
    349.66x = 115,531.81
  5. Step 5: Solve for x
    x = 115,531.81/349.66
  6. Step 6: Final answer
    x = 330.41

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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.