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Finding the Fourth Proportional to 179.99, 247.80 and 171.32

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Solution

The fourth proportional to 179.99, 247.80 and 171.32 is: 235.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.99 : 247.80 = 171.32 : x
  2. Step 2: Convert to fraction form
    179.99/247.80 = 171.32/x
  3. Step 3: Cross multiply
    179.99x = 247.80 × 171.32
  4. Step 4: Simplify right side
    179.99x = 42,453.10
  5. Step 5: Solve for x
    x = 42,453.10/179.99
  6. Step 6: Final answer
    x = 235.86

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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.