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Finding the Fourth Proportional to 188.31, 280.80 and 175.33

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Solution

The fourth proportional to 188.31, 280.80 and 175.33 is: 261.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.31 : 280.80 = 175.33 : x
  2. Step 2: Convert to fraction form
    188.31/280.80 = 175.33/x
  3. Step 3: Cross multiply
    188.31x = 280.80 × 175.33
  4. Step 4: Simplify right side
    188.31x = 49,231.26
  5. Step 5: Solve for x
    x = 49,231.26/188.31
  6. Step 6: Final answer
    x = 261.44

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.