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Finding the Fourth Proportional to 179.91, 248.36 and 117.74

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Solution

The fourth proportional to 179.91, 248.36 and 117.74 is: 162.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.91 : 248.36 = 117.74 : x
  2. Step 2: Convert to fraction form
    179.91/248.36 = 117.74/x
  3. Step 3: Cross multiply
    179.91x = 248.36 × 117.74
  4. Step 4: Simplify right side
    179.91x = 29,242.53
  5. Step 5: Solve for x
    x = 29,242.53/179.91
  6. Step 6: Final answer
    x = 162.54

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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.