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Finding the Fourth Proportional to 35.87, 53.81 and 11.83

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Solution

The fourth proportional to 35.87, 53.81 and 11.83 is: 17.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.87 : 53.81 = 11.83 : x
  2. Step 2: Convert to fraction form
    35.87/53.81 = 11.83/x
  3. Step 3: Cross multiply
    35.87x = 53.81 × 11.83
  4. Step 4: Simplify right side
    35.87x = 636.24
  5. Step 5: Solve for x
    x = 636.24/35.87
  6. Step 6: Final answer
    x = 17.74

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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.