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Finding the Fourth Proportional to 349.35, 482.17 and 201.98

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Solution

The fourth proportional to 349.35, 482.17 and 201.98 is: 278.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.35 : 482.17 = 201.98 : x
  2. Step 2: Convert to fraction form
    349.35/482.17 = 201.98/x
  3. Step 3: Cross multiply
    349.35x = 482.17 × 201.98
  4. Step 4: Simplify right side
    349.35x = 97,388.70
  5. Step 5: Solve for x
    x = 97,388.70/349.35
  6. Step 6: Final answer
    x = 278.77

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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.