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Finding the Fourth Proportional to 38.00, 56.78 and 36.59

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Solution

The fourth proportional to 38.00, 56.78 and 36.59 is: 54.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.00 : 56.78 = 36.59 : x
  2. Step 2: Convert to fraction form
    38.00/56.78 = 36.59/x
  3. Step 3: Cross multiply
    38.00x = 56.78 × 36.59
  4. Step 4: Simplify right side
    38.00x = 2,077.11
  5. Step 5: Solve for x
    x = 2,077.11/38.00
  6. Step 6: Final answer
    x = 54.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.