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Finding the Fourth Proportional to 47.49, 71.22 and 29.56

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Solution

The fourth proportional to 47.49, 71.22 and 29.56 is: 44.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.49 : 71.22 = 29.56 : x
  2. Step 2: Convert to fraction form
    47.49/71.22 = 29.56/x
  3. Step 3: Cross multiply
    47.49x = 71.22 × 29.56
  4. Step 4: Simplify right side
    47.49x = 2,105.26
  5. Step 5: Solve for x
    x = 2,105.26/47.49
  6. Step 6: Final answer
    x = 44.34

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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.