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Finding the Fourth Proportional to 27.45, 41.15 and 16.77

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Solution

The fourth proportional to 27.45, 41.15 and 16.77 is: 25.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.45 : 41.15 = 16.77 : x
  2. Step 2: Convert to fraction form
    27.45/41.15 = 16.77/x
  3. Step 3: Cross multiply
    27.45x = 41.15 × 16.77
  4. Step 4: Simplify right side
    27.45x = 690.09
  5. Step 5: Solve for x
    x = 690.09/27.45
  6. Step 6: Final answer
    x = 25.14

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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.