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Finding the Fourth Proportional to 84.28, 116.25 and 58.36

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Solution

The fourth proportional to 84.28, 116.25 and 58.36 is: 80.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84.28 : 116.25 = 58.36 : x
  2. Step 2: Convert to fraction form
    84.28/116.25 = 58.36/x
  3. Step 3: Cross multiply
    84.28x = 116.25 × 58.36
  4. Step 4: Simplify right side
    84.28x = 6,784.35
  5. Step 5: Solve for x
    x = 6,784.35/84.28
  6. Step 6: Final answer
    x = 80.50

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