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Finding the Fourth Proportional to 89.41, 134.12 and 46.18

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Solution

The fourth proportional to 89.41, 134.12 and 46.18 is: 69.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.41 : 134.12 = 46.18 : x
  2. Step 2: Convert to fraction form
    89.41/134.12 = 46.18/x
  3. Step 3: Cross multiply
    89.41x = 134.12 × 46.18
  4. Step 4: Simplify right side
    89.41x = 6,193.66
  5. Step 5: Solve for x
    x = 6,193.66/89.41
  6. Step 6: Final answer
    x = 69.27

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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.