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Finding the Fourth Proportional to 191.61, 264.43 and 104.29

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Solution

The fourth proportional to 191.61, 264.43 and 104.29 is: 143.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.61 : 264.43 = 104.29 : x
  2. Step 2: Convert to fraction form
    191.61/264.43 = 104.29/x
  3. Step 3: Cross multiply
    191.61x = 264.43 × 104.29
  4. Step 4: Simplify right side
    191.61x = 27,576.48
  5. Step 5: Solve for x
    x = 27,576.48/191.61
  6. Step 6: Final answer
    x = 143.92

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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.