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Finding the Fourth Proportional to 51.69, 77.54 and 16.51

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Solution

The fourth proportional to 51.69, 77.54 and 16.51 is: 24.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.69 : 77.54 = 16.51 : x
  2. Step 2: Convert to fraction form
    51.69/77.54 = 16.51/x
  3. Step 3: Cross multiply
    51.69x = 77.54 × 16.51
  4. Step 4: Simplify right side
    51.69x = 1,279.95
  5. Step 5: Solve for x
    x = 1,279.95/51.69
  6. Step 6: Final answer
    x = 24.76

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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.