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Finding the Fourth Proportional to 70.20, 105.23 and 24.54

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Solution

The fourth proportional to 70.20, 105.23 and 24.54 is: 36.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.20 : 105.23 = 24.54 : x
  2. Step 2: Convert to fraction form
    70.20/105.23 = 24.54/x
  3. Step 3: Cross multiply
    70.20x = 105.23 × 24.54
  4. Step 4: Simplify right side
    70.20x = 2,582.34
  5. Step 5: Solve for x
    x = 2,582.34/70.20
  6. Step 6: Final answer
    x = 36.79

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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.