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Finding the Fourth Proportional to 51.08, 76.50 and 36.76

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Solution

The fourth proportional to 51.08, 76.50 and 36.76 is: 55.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.08 : 76.50 = 36.76 : x
  2. Step 2: Convert to fraction form
    51.08/76.50 = 36.76/x
  3. Step 3: Cross multiply
    51.08x = 76.50 × 36.76
  4. Step 4: Simplify right side
    51.08x = 2,812.14
  5. Step 5: Solve for x
    x = 2,812.14/51.08
  6. Step 6: Final answer
    x = 55.05

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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.