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Finding the Fourth Proportional to 95.39, 143.30 and 94.18

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Solution

The fourth proportional to 95.39, 143.30 and 94.18 is: 141.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.39 : 143.30 = 94.18 : x
  2. Step 2: Convert to fraction form
    95.39/143.30 = 94.18/x
  3. Step 3: Cross multiply
    95.39x = 143.30 × 94.18
  4. Step 4: Simplify right side
    95.39x = 13,495.99
  5. Step 5: Solve for x
    x = 13,495.99/95.39
  6. Step 6: Final answer
    x = 141.48

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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.