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Finding the Fourth Proportional to 179.77, 269.58 and 71.50

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Solution

The fourth proportional to 179.77, 269.58 and 71.50 is: 107.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.77 : 269.58 = 71.50 : x
  2. Step 2: Convert to fraction form
    179.77/269.58 = 71.50/x
  3. Step 3: Cross multiply
    179.77x = 269.58 × 71.50
  4. Step 4: Simplify right side
    179.77x = 19,274.97
  5. Step 5: Solve for x
    x = 19,274.97/179.77
  6. Step 6: Final answer
    x = 107.22

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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.