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Finding the Fourth Proportional to 89.60, 134.38 and 35.48

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Solution

The fourth proportional to 89.60, 134.38 and 35.48 is: 53.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.60 : 134.38 = 35.48 : x
  2. Step 2: Convert to fraction form
    89.60/134.38 = 35.48/x
  3. Step 3: Cross multiply
    89.60x = 134.38 × 35.48
  4. Step 4: Simplify right side
    89.60x = 4,767.80
  5. Step 5: Solve for x
    x = 4,767.80/89.60
  6. Step 6: Final answer
    x = 53.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.