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Finding the Fourth Proportional to 144.41, 217.99 and 143.60

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Solution

The fourth proportional to 144.41, 217.99 and 143.60 is: 216.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.41 : 217.99 = 143.60 : x
  2. Step 2: Convert to fraction form
    144.41/217.99 = 143.60/x
  3. Step 3: Cross multiply
    144.41x = 217.99 × 143.60
  4. Step 4: Simplify right side
    144.41x = 31,302.45
  5. Step 5: Solve for x
    x = 31,302.45/144.41
  6. Step 6: Final answer
    x = 216.77

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.