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Finding the Fourth Proportional to 95.20, 140.80 and 95.20

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Solution

The fourth proportional to 95.20, 140.80 and 95.20 is: 140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.20 : 140.80 = 95.20 : x
  2. Step 2: Convert to fraction form
    95.20/140.80 = 95.20/x
  3. Step 3: Cross multiply
    95.20x = 140.80 × 95.20
  4. Step 4: Simplify right side
    95.20x = 13,404.16
  5. Step 5: Solve for x
    x = 13,404.16/95.20
  6. Step 6: Final answer
    x = 140.80

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.