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Finding the Fourth Proportional to 601.22, 901.28 and 211

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Solution

The fourth proportional to 601.22, 901.28 and 211 is: 316.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.22 : 901.28 = 211 : x
  2. Step 2: Convert to fraction form
    601.22/901.28 = 211/x
  3. Step 3: Cross multiply
    601.22x = 901.28 × 211
  4. Step 4: Simplify right side
    601.22x = 190,170.08
  5. Step 5: Solve for x
    x = 190,170.08/601.22
  6. Step 6: Final answer
    x = 316.31

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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.