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Finding the Fourth Proportional to 104.52, 144.26 and 70

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Solution

The fourth proportional to 104.52, 144.26 and 70 is: 96.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.52 : 144.26 = 70 : x
  2. Step 2: Convert to fraction form
    104.52/144.26 = 70/x
  3. Step 3: Cross multiply
    104.52x = 144.26 × 70
  4. Step 4: Simplify right side
    104.52x = 10,098.20
  5. Step 5: Solve for x
    x = 10,098.20/104.52
  6. Step 6: Final answer
    x = 96.62

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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.