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Finding the Fourth Proportional to 69.03, 103.29 and 58.20

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Solution

The fourth proportional to 69.03, 103.29 and 58.20 is: 87.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.03 : 103.29 = 58.20 : x
  2. Step 2: Convert to fraction form
    69.03/103.29 = 58.20/x
  3. Step 3: Cross multiply
    69.03x = 103.29 × 58.20
  4. Step 4: Simplify right side
    69.03x = 6,011.88
  5. Step 5: Solve for x
    x = 6,011.88/69.03
  6. Step 6: Final answer
    x = 87.10

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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.