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Finding the Fourth Proportional to 41.16, 56.78 and 25.60

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Solution

The fourth proportional to 41.16, 56.78 and 25.60 is: 35.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    41.16 : 56.78 = 25.60 : x
  2. Step 2: Convert to fraction form
    41.16/56.78 = 25.60/x
  3. Step 3: Cross multiply
    41.16x = 56.78 × 25.60
  4. Step 4: Simplify right side
    41.16x = 1,453.57
  5. Step 5: Solve for x
    x = 1,453.57/41.16
  6. Step 6: Final answer
    x = 35.32

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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.