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Finding the Fourth Proportional to 38.95, 58.72 and 36.34

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Solution

The fourth proportional to 38.95, 58.72 and 36.34 is: 54.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.95 : 58.72 = 36.34 : x
  2. Step 2: Convert to fraction form
    38.95/58.72 = 36.34/x
  3. Step 3: Cross multiply
    38.95x = 58.72 × 36.34
  4. Step 4: Simplify right side
    38.95x = 2,133.88
  5. Step 5: Solve for x
    x = 2,133.88/38.95
  6. Step 6: Final answer
    x = 54.79

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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.