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Finding the Fourth Proportional to 132.58, 182.82 and 118

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Solution

The fourth proportional to 132.58, 182.82 and 118 is: 162.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.58 : 182.82 = 118 : x
  2. Step 2: Convert to fraction form
    132.58/182.82 = 118/x
  3. Step 3: Cross multiply
    132.58x = 182.82 × 118
  4. Step 4: Simplify right side
    132.58x = 21,572.76
  5. Step 5: Solve for x
    x = 21,572.76/132.58
  6. Step 6: Final answer
    x = 162.72

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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.