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Finding the Fourth Proportional to 349.36, 524 and 105.88

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Solution

The fourth proportional to 349.36, 524 and 105.88 is: 158.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.36 : 524 = 105.88 : x
  2. Step 2: Convert to fraction form
    349.36/524 = 105.88/x
  3. Step 3: Cross multiply
    349.36x = 524 × 105.88
  4. Step 4: Simplify right side
    349.36x = 55,481.12
  5. Step 5: Solve for x
    x = 55,481.12/349.36
  6. Step 6: Final answer
    x = 158.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.