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Finding the Fourth Proportional to 188.72, 283.12 and 60.56

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Solution

The fourth proportional to 188.72, 283.12 and 60.56 is: 90.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.72 : 283.12 = 60.56 : x
  2. Step 2: Convert to fraction form
    188.72/283.12 = 60.56/x
  3. Step 3: Cross multiply
    188.72x = 283.12 × 60.56
  4. Step 4: Simplify right side
    188.72x = 17,145.75
  5. Step 5: Solve for x
    x = 17,145.75/188.72
  6. Step 6: Final answer
    x = 90.85

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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.