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Finding the Fourth Proportional to 95.40, 142.88 and 94.58

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Solution

The fourth proportional to 95.40, 142.88 and 94.58 is: 141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.40 : 142.88 = 94.58 : x
  2. Step 2: Convert to fraction form
    95.40/142.88 = 94.58/x
  3. Step 3: Cross multiply
    95.40x = 142.88 × 94.58
  4. Step 4: Simplify right side
    95.40x = 13,513.59
  5. Step 5: Solve for x
    x = 13,513.59/95.40
  6. Step 6: Final answer
    x = 141.65

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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.