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Finding the Fourth Proportional to 349.77, 482.63 and 209.85

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Solution

The fourth proportional to 349.77, 482.63 and 209.85 is: 289.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.77 : 482.63 = 209.85 : x
  2. Step 2: Convert to fraction form
    349.77/482.63 = 209.85/x
  3. Step 3: Cross multiply
    349.77x = 482.63 × 209.85
  4. Step 4: Simplify right side
    349.77x = 101,279.91
  5. Step 5: Solve for x
    x = 101,279.91/349.77
  6. Step 6: Final answer
    x = 289.56

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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.