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Finding the Fourth Proportional to 179.54, 269.36 and 57.80

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Solution

The fourth proportional to 179.54, 269.36 and 57.80 is: 86.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.54 : 269.36 = 57.80 : x
  2. Step 2: Convert to fraction form
    179.54/269.36 = 57.80/x
  3. Step 3: Cross multiply
    179.54x = 269.36 × 57.80
  4. Step 4: Simplify right side
    179.54x = 15,569.01
  5. Step 5: Solve for x
    x = 15,569.01/179.54
  6. Step 6: Final answer
    x = 86.72

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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.