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Finding the Fourth Proportional to 68.96, 95.13 and 41.31

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Solution

The fourth proportional to 68.96, 95.13 and 41.31 is: 56.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.96 : 95.13 = 41.31 : x
  2. Step 2: Convert to fraction form
    68.96/95.13 = 41.31/x
  3. Step 3: Cross multiply
    68.96x = 95.13 × 41.31
  4. Step 4: Simplify right side
    68.96x = 3,929.82
  5. Step 5: Solve for x
    x = 3,929.82/68.96
  6. Step 6: Final answer
    x = 56.98

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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.