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Finding the Fourth Proportional to 188.56, 260.15 and 109.84

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Solution

The fourth proportional to 188.56, 260.15 and 109.84 is: 151.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.56 : 260.15 = 109.84 : x
  2. Step 2: Convert to fraction form
    188.56/260.15 = 109.84/x
  3. Step 3: Cross multiply
    188.56x = 260.15 × 109.84
  4. Step 4: Simplify right side
    188.56x = 28,574.88
  5. Step 5: Solve for x
    x = 28,574.88/188.56
  6. Step 6: Final answer
    x = 151.54

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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.