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Finding the Fourth Proportional to 40.26, 57.60 and 40.26

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Solution

The fourth proportional to 40.26, 57.60 and 40.26 is: 57.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    40.26 : 57.60 = 40.26 : x
  2. Step 2: Convert to fraction form
    40.26/57.60 = 40.26/x
  3. Step 3: Cross multiply
    40.26x = 57.60 × 40.26
  4. Step 4: Simplify right side
    40.26x = 2,318.98
  5. Step 5: Solve for x
    x = 2,318.98/40.26
  6. Step 6: Final answer
    x = 57.60

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.