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Finding the Fourth Proportional to 69.90, 104.99 and 37.43

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Solution

The fourth proportional to 69.90, 104.99 and 37.43 is: 56.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69.90 : 104.99 = 37.43 : x
  2. Step 2: Convert to fraction form
    69.90/104.99 = 37.43/x
  3. Step 3: Cross multiply
    69.90x = 104.99 × 37.43
  4. Step 4: Simplify right side
    69.90x = 3,929.78
  5. Step 5: Solve for x
    x = 3,929.78/69.90
  6. Step 6: Final answer
    x = 56.22

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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.