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Finding the Fourth Proportional to 179.89, 269.84 and 51.64

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Solution

The fourth proportional to 179.89, 269.84 and 51.64 is: 77.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.89 : 269.84 = 51.64 : x
  2. Step 2: Convert to fraction form
    179.89/269.84 = 51.64/x
  3. Step 3: Cross multiply
    179.89x = 269.84 × 51.64
  4. Step 4: Simplify right side
    179.89x = 13,934.41
  5. Step 5: Solve for x
    x = 13,934.41/179.89
  6. Step 6: Final answer
    x = 77.46

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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.