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Finding the Fourth Proportional to 349.38, 524.04 and 105.91

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Solution

The fourth proportional to 349.38, 524.04 and 105.91 is: 158.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.38 : 524.04 = 105.91 : x
  2. Step 2: Convert to fraction form
    349.38/524.04 = 105.91/x
  3. Step 3: Cross multiply
    349.38x = 524.04 × 105.91
  4. Step 4: Simplify right side
    349.38x = 55,499.37
  5. Step 5: Solve for x
    x = 55,499.37/349.38
  6. Step 6: Final answer
    x = 158.85

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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.