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Finding the Fourth Proportional to 118.08, 177.11 and 53.08

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Solution

The fourth proportional to 118.08, 177.11 and 53.08 is: 79.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.08 : 177.11 = 53.08 : x
  2. Step 2: Convert to fraction form
    118.08/177.11 = 53.08/x
  3. Step 3: Cross multiply
    118.08x = 177.11 × 53.08
  4. Step 4: Simplify right side
    118.08x = 9,400.73
  5. Step 5: Solve for x
    x = 9,400.73/118.08
  6. Step 6: Final answer
    x = 79.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.