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Finding the Fourth Proportional to 177.67, 266.63 and 69.49

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Solution

The fourth proportional to 177.67, 266.63 and 69.49 is: 104.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.67 : 266.63 = 69.49 : x
  2. Step 2: Convert to fraction form
    177.67/266.63 = 69.49/x
  3. Step 3: Cross multiply
    177.67x = 266.63 × 69.49
  4. Step 4: Simplify right side
    177.67x = 18,528.12
  5. Step 5: Solve for x
    x = 18,528.12/177.67
  6. Step 6: Final answer
    x = 104.28

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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.