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Finding the Fourth Proportional to 29.65, 44.42 and 18.94

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Solution

The fourth proportional to 29.65, 44.42 and 18.94 is: 28.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.65 : 44.42 = 18.94 : x
  2. Step 2: Convert to fraction form
    29.65/44.42 = 18.94/x
  3. Step 3: Cross multiply
    29.65x = 44.42 × 18.94
  4. Step 4: Simplify right side
    29.65x = 841.25
  5. Step 5: Solve for x
    x = 841.25/29.65
  6. Step 6: Final answer
    x = 28.38

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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.