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Finding the Fourth Proportional to 118.18, 177.38 and 63.38

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Solution

The fourth proportional to 118.18, 177.38 and 63.38 is: 95.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.18 : 177.38 = 63.38 : x
  2. Step 2: Convert to fraction form
    118.18/177.38 = 63.38/x
  3. Step 3: Cross multiply
    118.18x = 177.38 × 63.38
  4. Step 4: Simplify right side
    118.18x = 11,242.34
  5. Step 5: Solve for x
    x = 11,242.34/118.18
  6. Step 6: Final answer
    x = 95.13

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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.