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Finding the Fourth Proportional to 118.84, 177.03 and 115.26

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Solution

The fourth proportional to 118.84, 177.03 and 115.26 is: 171.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.84 : 177.03 = 115.26 : x
  2. Step 2: Convert to fraction form
    118.84/177.03 = 115.26/x
  3. Step 3: Cross multiply
    118.84x = 177.03 × 115.26
  4. Step 4: Simplify right side
    118.84x = 20,404.48
  5. Step 5: Solve for x
    x = 20,404.48/118.84
  6. Step 6: Final answer
    x = 171.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.