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Finding the Fourth Proportional to 89.56, 134.95 and 88.82

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Solution

The fourth proportional to 89.56, 134.95 and 88.82 is: 133.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.56 : 134.95 = 88.82 : x
  2. Step 2: Convert to fraction form
    89.56/134.95 = 88.82/x
  3. Step 3: Cross multiply
    89.56x = 134.95 × 88.82
  4. Step 4: Simplify right side
    89.56x = 11,986.26
  5. Step 5: Solve for x
    x = 11,986.26/89.56
  6. Step 6: Final answer
    x = 133.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.