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Finding the Fourth Proportional to 179.49, 247.65 and 117.33

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Solution

The fourth proportional to 179.49, 247.65 and 117.33 is: 161.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.49 : 247.65 = 117.33 : x
  2. Step 2: Convert to fraction form
    179.49/247.65 = 117.33/x
  3. Step 3: Cross multiply
    179.49x = 247.65 × 117.33
  4. Step 4: Simplify right side
    179.49x = 29,056.77
  5. Step 5: Solve for x
    x = 29,056.77/179.49
  6. Step 6: Final answer
    x = 161.89

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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.