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Finding the Fourth Proportional to 349.50, 482.18 and 238.98

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Solution

The fourth proportional to 349.50, 482.18 and 238.98 is: 329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.50 : 482.18 = 238.98 : x
  2. Step 2: Convert to fraction form
    349.50/482.18 = 238.98/x
  3. Step 3: Cross multiply
    349.50x = 482.18 × 238.98
  4. Step 4: Simplify right side
    349.50x = 115,231.38
  5. Step 5: Solve for x
    x = 115,231.38/349.50
  6. Step 6: Final answer
    x = 329.70

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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.