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Finding the Fourth Proportional to 82.83, 114.29 and 47.38

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Solution

The fourth proportional to 82.83, 114.29 and 47.38 is: 65.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.83 : 114.29 = 47.38 : x
  2. Step 2: Convert to fraction form
    82.83/114.29 = 47.38/x
  3. Step 3: Cross multiply
    82.83x = 114.29 × 47.38
  4. Step 4: Simplify right side
    82.83x = 5,415.20
  5. Step 5: Solve for x
    x = 5,415.20/82.83
  6. Step 6: Final answer
    x = 65.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.