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Finding the Fourth Proportional to 95.15, 142.53 and 83.53

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Solution

The fourth proportional to 95.15, 142.53 and 83.53 is: 125.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    95.15 : 142.53 = 83.53 : x
  2. Step 2: Convert to fraction form
    95.15/142.53 = 83.53/x
  3. Step 3: Cross multiply
    95.15x = 142.53 × 83.53
  4. Step 4: Simplify right side
    95.15x = 11,906.10
  5. Step 5: Solve for x
    x = 11,906.10/95.15
  6. Step 6: Final answer
    x = 125.13

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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.