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Finding the Fourth Proportional to 69.37, 103.89 and 58.03

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Solution

The fourth proportional to 69.37, 103.89 and 58.03 is: 86.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.37 : 103.89 = 58.03 : x
  2. Step 2: Convert to fraction form
    69.37/103.89 = 58.03/x
  3. Step 3: Cross multiply
    69.37x = 103.89 × 58.03
  4. Step 4: Simplify right side
    69.37x = 6,028.74
  5. Step 5: Solve for x
    x = 6,028.74/69.37
  6. Step 6: Final answer
    x = 86.91

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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.