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Finding the Fourth Proportional to 38.45, 57.95 and 37.91

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Solution

The fourth proportional to 38.45, 57.95 and 37.91 is: 57.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.45 : 57.95 = 37.91 : x
  2. Step 2: Convert to fraction form
    38.45/57.95 = 37.91/x
  3. Step 3: Cross multiply
    38.45x = 57.95 × 37.91
  4. Step 4: Simplify right side
    38.45x = 2,196.69
  5. Step 5: Solve for x
    x = 2,196.69/38.45
  6. Step 6: Final answer
    x = 57.14

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.