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Finding the Fourth Proportional to 38.60, 57.76 and 37.36

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Solution

The fourth proportional to 38.60, 57.76 and 37.36 is: 55.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.60 : 57.76 = 37.36 : x
  2. Step 2: Convert to fraction form
    38.60/57.76 = 37.36/x
  3. Step 3: Cross multiply
    38.60x = 57.76 × 37.36
  4. Step 4: Simplify right side
    38.60x = 2,157.91
  5. Step 5: Solve for x
    x = 2,157.91/38.60
  6. Step 6: Final answer
    x = 55.90

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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.