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Finding the Fourth Proportional to 251.07, 346.28 and 211.04

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Solution

The fourth proportional to 251.07, 346.28 and 211.04 is: 291.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.07 : 346.28 = 211.04 : x
  2. Step 2: Convert to fraction form
    251.07/346.28 = 211.04/x
  3. Step 3: Cross multiply
    251.07x = 346.28 × 211.04
  4. Step 4: Simplify right side
    251.07x = 73,076.14
  5. Step 5: Solve for x
    x = 73,076.14/251.07
  6. Step 6: Final answer
    x = 291.06

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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.