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Finding the Fourth Proportional to 89.73, 134.64 and 62.55

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Solution

The fourth proportional to 89.73, 134.64 and 62.55 is: 93.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.73 : 134.64 = 62.55 : x
  2. Step 2: Convert to fraction form
    89.73/134.64 = 62.55/x
  3. Step 3: Cross multiply
    89.73x = 134.64 × 62.55
  4. Step 4: Simplify right side
    89.73x = 8,421.73
  5. Step 5: Solve for x
    x = 8,421.73/89.73
  6. Step 6: Final answer
    x = 93.86

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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.