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Finding the Fourth Proportional to 601.45, 902.39 and 211.56

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Solution

The fourth proportional to 601.45, 902.39 and 211.56 is: 317.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    601.45 : 902.39 = 211.56 : x
  2. Step 2: Convert to fraction form
    601.45/902.39 = 211.56/x
  3. Step 3: Cross multiply
    601.45x = 902.39 × 211.56
  4. Step 4: Simplify right side
    601.45x = 190,909.63
  5. Step 5: Solve for x
    x = 190,909.63/601.45
  6. Step 6: Final answer
    x = 317.42

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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.