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Finding the Fourth Proportional to 177.49, 243.71 and 149.75

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Solution

The fourth proportional to 177.49, 243.71 and 149.75 is: 205.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.49 : 243.71 = 149.75 : x
  2. Step 2: Convert to fraction form
    177.49/243.71 = 149.75/x
  3. Step 3: Cross multiply
    177.49x = 243.71 × 149.75
  4. Step 4: Simplify right side
    177.49x = 36,495.08
  5. Step 5: Solve for x
    x = 36,495.08/177.49
  6. Step 6: Final answer
    x = 205.62

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.