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Finding the Fourth Proportional to 95.70, 131.98 and 69.65

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Solution

The fourth proportional to 95.70, 131.98 and 69.65 is: 96.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.70 : 131.98 = 69.65 : x
  2. Step 2: Convert to fraction form
    95.70/131.98 = 69.65/x
  3. Step 3: Cross multiply
    95.70x = 131.98 × 69.65
  4. Step 4: Simplify right side
    95.70x = 9,192.41
  5. Step 5: Solve for x
    x = 9,192.41/95.70
  6. Step 6: Final answer
    x = 96.05

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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.