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Finding the Fourth Proportional to 89.89, 124.08 and 63.97

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Solution

The fourth proportional to 89.89, 124.08 and 63.97 is: 88.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.89 : 124.08 = 63.97 : x
  2. Step 2: Convert to fraction form
    89.89/124.08 = 63.97/x
  3. Step 3: Cross multiply
    89.89x = 124.08 × 63.97
  4. Step 4: Simplify right side
    89.89x = 7,937.40
  5. Step 5: Solve for x
    x = 7,937.40/89.89
  6. Step 6: Final answer
    x = 88.30

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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.