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Finding the Fourth Proportional to 47.44, 65.57 and 39.27

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Solution

The fourth proportional to 47.44, 65.57 and 39.27 is: 54.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.44 : 65.57 = 39.27 : x
  2. Step 2: Convert to fraction form
    47.44/65.57 = 39.27/x
  3. Step 3: Cross multiply
    47.44x = 65.57 × 39.27
  4. Step 4: Simplify right side
    47.44x = 2,574.93
  5. Step 5: Solve for x
    x = 2,574.93/47.44
  6. Step 6: Final answer
    x = 54.28

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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.