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Finding the Fourth Proportional to 62.54, 86.50 and 49.56

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Solution

The fourth proportional to 62.54, 86.50 and 49.56 is: 68.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    62.54 : 86.50 = 49.56 : x
  2. Step 2: Convert to fraction form
    62.54/86.50 = 49.56/x
  3. Step 3: Cross multiply
    62.54x = 86.50 × 49.56
  4. Step 4: Simplify right side
    62.54x = 4,286.51
  5. Step 5: Solve for x
    x = 4,286.51/62.54
  6. Step 6: Final answer
    x = 68.54

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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.