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Finding the Fourth Proportional to 188.67, 282.98 and 51.73

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Solution

The fourth proportional to 188.67, 282.98 and 51.73 is: 77.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.67 : 282.98 = 51.73 : x
  2. Step 2: Convert to fraction form
    188.67/282.98 = 51.73/x
  3. Step 3: Cross multiply
    188.67x = 282.98 × 51.73
  4. Step 4: Simplify right side
    188.67x = 14,638.56
  5. Step 5: Solve for x
    x = 14,638.56/188.67
  6. Step 6: Final answer
    x = 77.59

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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.