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Finding the Fourth Proportional to 188.39, 260.24 and 147.47

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Solution

The fourth proportional to 188.39, 260.24 and 147.47 is: 203.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    188.39 : 260.24 = 147.47 : x
  2. Step 2: Convert to fraction form
    188.39/260.24 = 147.47/x
  3. Step 3: Cross multiply
    188.39x = 260.24 × 147.47
  4. Step 4: Simplify right side
    188.39x = 38,375.55
  5. Step 5: Solve for x
    x = 38,375.55/188.39
  6. Step 6: Final answer
    x = 203.70

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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.