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Finding the Fourth Proportional to 349.57, 524.49 and 212.73

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Solution

The fourth proportional to 349.57, 524.49 and 212.73 is: 319.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.57 : 524.49 = 212.73 : x
  2. Step 2: Convert to fraction form
    349.57/524.49 = 212.73/x
  3. Step 3: Cross multiply
    349.57x = 524.49 × 212.73
  4. Step 4: Simplify right side
    349.57x = 111,574.76
  5. Step 5: Solve for x
    x = 111,574.76/349.57
  6. Step 6: Final answer
    x = 319.18

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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.