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Finding the Fourth Proportional to 82.54, 113.88 and 58.98

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Solution

The fourth proportional to 82.54, 113.88 and 58.98 is: 81.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.54 : 113.88 = 58.98 : x
  2. Step 2: Convert to fraction form
    82.54/113.88 = 58.98/x
  3. Step 3: Cross multiply
    82.54x = 113.88 × 58.98
  4. Step 4: Simplify right side
    82.54x = 6,716.48
  5. Step 5: Solve for x
    x = 6,716.48/82.54
  6. Step 6: Final answer
    x = 81.38

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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.