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Finding the Fourth Proportional to 191.28, 264.49 and 188.19

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Solution

The fourth proportional to 191.28, 264.49 and 188.19 is: 260.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.28 : 264.49 = 188.19 : x
  2. Step 2: Convert to fraction form
    191.28/264.49 = 188.19/x
  3. Step 3: Cross multiply
    191.28x = 264.49 × 188.19
  4. Step 4: Simplify right side
    191.28x = 49,774.37
  5. Step 5: Solve for x
    x = 49,774.37/191.28
  6. Step 6: Final answer
    x = 260.22

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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.