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Finding the Fourth Proportional to 57.94, 86.79 and 37.60

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Solution

The fourth proportional to 57.94, 86.79 and 37.60 is: 56.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57.94 : 86.79 = 37.60 : x
  2. Step 2: Convert to fraction form
    57.94/86.79 = 37.60/x
  3. Step 3: Cross multiply
    57.94x = 86.79 × 37.60
  4. Step 4: Simplify right side
    57.94x = 3,263.30
  5. Step 5: Solve for x
    x = 3,263.30/57.94
  6. Step 6: Final answer
    x = 56.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.