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Finding the Fourth Proportional to 191.64, 262.68 and 188.94

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Solution

The fourth proportional to 191.64, 262.68 and 188.94 is: 258.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.64 : 262.68 = 188.94 : x
  2. Step 2: Convert to fraction form
    191.64/262.68 = 188.94/x
  3. Step 3: Cross multiply
    191.64x = 262.68 × 188.94
  4. Step 4: Simplify right side
    191.64x = 49,630.52
  5. Step 5: Solve for x
    x = 49,630.52/191.64
  6. Step 6: Final answer
    x = 258.98

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.