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Finding the Fourth Proportional to 36.81, 51.05 and 35.70

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Solution

The fourth proportional to 36.81, 51.05 and 35.70 is: 49.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.81 : 51.05 = 35.70 : x
  2. Step 2: Convert to fraction form
    36.81/51.05 = 35.70/x
  3. Step 3: Cross multiply
    36.81x = 51.05 × 35.70
  4. Step 4: Simplify right side
    36.81x = 1,822.49
  5. Step 5: Solve for x
    x = 1,822.49/36.81
  6. Step 6: Final answer
    x = 49.51

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.