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Finding the Fourth Proportional to 47.51, 70.92 and 41.05

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Solution

The fourth proportional to 47.51, 70.92 and 41.05 is: 61.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.51 : 70.92 = 41.05 : x
  2. Step 2: Convert to fraction form
    47.51/70.92 = 41.05/x
  3. Step 3: Cross multiply
    47.51x = 70.92 × 41.05
  4. Step 4: Simplify right side
    47.51x = 2,911.27
  5. Step 5: Solve for x
    x = 2,911.27/47.51
  6. Step 6: Final answer
    x = 61.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.