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Finding the Fourth Proportional to 200.67, 277.05 and 180.15

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Solution

The fourth proportional to 200.67, 277.05 and 180.15 is: 248.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.67 : 277.05 = 180.15 : x
  2. Step 2: Convert to fraction form
    200.67/277.05 = 180.15/x
  3. Step 3: Cross multiply
    200.67x = 277.05 × 180.15
  4. Step 4: Simplify right side
    200.67x = 49,910.56
  5. Step 5: Solve for x
    x = 49,910.56/200.67
  6. Step 6: Final answer
    x = 248.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.