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Finding the Fourth Proportional to 179.72, 247.99 and 135.47

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Solution

The fourth proportional to 179.72, 247.99 and 135.47 is: 186.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.72 : 247.99 = 135.47 : x
  2. Step 2: Convert to fraction form
    179.72/247.99 = 135.47/x
  3. Step 3: Cross multiply
    179.72x = 247.99 × 135.47
  4. Step 4: Simplify right side
    179.72x = 33,595.36
  5. Step 5: Solve for x
    x = 33,595.36/179.72
  6. Step 6: Final answer
    x = 186.93

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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.