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Finding the Fourth Proportional to 349.88, 483.06 and 239.40

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Solution

The fourth proportional to 349.88, 483.06 and 239.40 is: 330.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.88 : 483.06 = 239.40 : x
  2. Step 2: Convert to fraction form
    349.88/483.06 = 239.40/x
  3. Step 3: Cross multiply
    349.88x = 483.06 × 239.40
  4. Step 4: Simplify right side
    349.88x = 115,644.56
  5. Step 5: Solve for x
    x = 115,644.56/349.88
  6. Step 6: Final answer
    x = 330.53

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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.