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Finding the Fourth Proportional to 177.74, 266.62 and 100.68

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Solution

The fourth proportional to 177.74, 266.62 and 100.68 is: 151.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.74 : 266.62 = 100.68 : x
  2. Step 2: Convert to fraction form
    177.74/266.62 = 100.68/x
  3. Step 3: Cross multiply
    177.74x = 266.62 × 100.68
  4. Step 4: Simplify right side
    177.74x = 26,843.30
  5. Step 5: Solve for x
    x = 26,843.30/177.74
  6. Step 6: Final answer
    x = 151.03

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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.