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Finding the Fourth Proportional to 95.97, 143.98 and 69.72

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Solution

The fourth proportional to 95.97, 143.98 and 69.72 is: 104.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.97 : 143.98 = 69.72 : x
  2. Step 2: Convert to fraction form
    95.97/143.98 = 69.72/x
  3. Step 3: Cross multiply
    95.97x = 143.98 × 69.72
  4. Step 4: Simplify right side
    95.97x = 10,038.11
  5. Step 5: Solve for x
    x = 10,038.11/95.97
  6. Step 6: Final answer
    x = 104.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.