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Finding the Fourth Proportional to 200.80, 277.12 and 171.68

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Solution

The fourth proportional to 200.80, 277.12 and 171.68 is: 236.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.80 : 277.12 = 171.68 : x
  2. Step 2: Convert to fraction form
    200.80/277.12 = 171.68/x
  3. Step 3: Cross multiply
    200.80x = 277.12 × 171.68
  4. Step 4: Simplify right side
    200.80x = 47,575.96
  5. Step 5: Solve for x
    x = 47,575.96/200.80
  6. Step 6: Final answer
    x = 236.93

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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.