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Finding the Fourth Proportional to 34.72, 47.96 and 25.07

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Solution

The fourth proportional to 34.72, 47.96 and 25.07 is: 34.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    34.72 : 47.96 = 25.07 : x
  2. Step 2: Convert to fraction form
    34.72/47.96 = 25.07/x
  3. Step 3: Cross multiply
    34.72x = 47.96 × 25.07
  4. Step 4: Simplify right side
    34.72x = 1,202.09
  5. Step 5: Solve for x
    x = 1,202.09/34.72
  6. Step 6: Final answer
    x = 34.62

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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.