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Finding the Fourth Proportional to 95.84, 143.03 and 85.59

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Solution

The fourth proportional to 95.84, 143.03 and 85.59 is: 127.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.84 : 143.03 = 85.59 : x
  2. Step 2: Convert to fraction form
    95.84/143.03 = 85.59/x
  3. Step 3: Cross multiply
    95.84x = 143.03 × 85.59
  4. Step 4: Simplify right side
    95.84x = 12,241.38
  5. Step 5: Solve for x
    x = 12,241.38/95.84
  6. Step 6: Final answer
    x = 127.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.