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Finding the Fourth Proportional to 187.85, 281.73 and 50.88

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Solution

The fourth proportional to 187.85, 281.73 and 50.88 is: 76.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.85 : 281.73 = 50.88 : x
  2. Step 2: Convert to fraction form
    187.85/281.73 = 50.88/x
  3. Step 3: Cross multiply
    187.85x = 281.73 × 50.88
  4. Step 4: Simplify right side
    187.85x = 14,334.42
  5. Step 5: Solve for x
    x = 14,334.42/187.85
  6. Step 6: Final answer
    x = 76.31

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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.