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Finding the Fourth Proportional to 349.96, 521.57 and 349.42

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Solution

The fourth proportional to 349.96, 521.57 and 349.42 is: 520.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.96 : 521.57 = 349.42 : x
  2. Step 2: Convert to fraction form
    349.96/521.57 = 349.42/x
  3. Step 3: Cross multiply
    349.96x = 521.57 × 349.42
  4. Step 4: Simplify right side
    349.96x = 182,246.99
  5. Step 5: Solve for x
    x = 182,246.99/349.96
  6. Step 6: Final answer
    x = 520.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.