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Finding the Fourth Proportional to 62.33, 85.97 and 55.34

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Solution

The fourth proportional to 62.33, 85.97 and 55.34 is: 76.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.33 : 85.97 = 55.34 : x
  2. Step 2: Convert to fraction form
    62.33/85.97 = 55.34/x
  3. Step 3: Cross multiply
    62.33x = 85.97 × 55.34
  4. Step 4: Simplify right side
    62.33x = 4,757.61
  5. Step 5: Solve for x
    x = 4,757.61/62.33
  6. Step 6: Final answer
    x = 76.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.