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Finding the Fourth Proportional to 179.69, 247.65 and 135.95

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Solution

The fourth proportional to 179.69, 247.65 and 135.95 is: 187.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.69 : 247.65 = 135.95 : x
  2. Step 2: Convert to fraction form
    179.69/247.65 = 135.95/x
  3. Step 3: Cross multiply
    179.69x = 247.65 × 135.95
  4. Step 4: Simplify right side
    179.69x = 33,668.02
  5. Step 5: Solve for x
    x = 33,668.02/179.69
  6. Step 6: Final answer
    x = 187.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.