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Finding the Fourth Proportional to 349.79, 482.76 and 211.79

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Solution

The fourth proportional to 349.79, 482.76 and 211.79 is: 292.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.79 : 482.76 = 211.79 : x
  2. Step 2: Convert to fraction form
    349.79/482.76 = 211.79/x
  3. Step 3: Cross multiply
    349.79x = 482.76 × 211.79
  4. Step 4: Simplify right side
    349.79x = 102,242.68
  5. Step 5: Solve for x
    x = 102,242.68/349.79
  6. Step 6: Final answer
    x = 292.30

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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.