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Finding the Fourth Proportional to 152.99, 229.82 and 109.79

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Solution

The fourth proportional to 152.99, 229.82 and 109.79 is: 164.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.99 : 229.82 = 109.79 : x
  2. Step 2: Convert to fraction form
    152.99/229.82 = 109.79/x
  3. Step 3: Cross multiply
    152.99x = 229.82 × 109.79
  4. Step 4: Simplify right side
    152.99x = 25,231.94
  5. Step 5: Solve for x
    x = 25,231.94/152.99
  6. Step 6: Final answer
    x = 164.93

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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.