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Finding the Fourth Proportional to 179.02, 247.15 and 137.49

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Solution

The fourth proportional to 179.02, 247.15 and 137.49 is: 189.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.02 : 247.15 = 137.49 : x
  2. Step 2: Convert to fraction form
    179.02/247.15 = 137.49/x
  3. Step 3: Cross multiply
    179.02x = 247.15 × 137.49
  4. Step 4: Simplify right side
    179.02x = 33,980.65
  5. Step 5: Solve for x
    x = 33,980.65/179.02
  6. Step 6: Final answer
    x = 189.81

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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.