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Finding the Fourth Proportional to 180.19, 248.59 and 118.09

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Solution

The fourth proportional to 180.19, 248.59 and 118.09 is: 162.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.19 : 248.59 = 118.09 : x
  2. Step 2: Convert to fraction form
    180.19/248.59 = 118.09/x
  3. Step 3: Cross multiply
    180.19x = 248.59 × 118.09
  4. Step 4: Simplify right side
    180.19x = 29,355.99
  5. Step 5: Solve for x
    x = 29,355.99/180.19
  6. Step 6: Final answer
    x = 162.92

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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.