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Finding the Fourth Proportional to 176.89, 244.08 and 103.19

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Solution

The fourth proportional to 176.89, 244.08 and 103.19 is: 142.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.89 : 244.08 = 103.19 : x
  2. Step 2: Convert to fraction form
    176.89/244.08 = 103.19/x
  3. Step 3: Cross multiply
    176.89x = 244.08 × 103.19
  4. Step 4: Simplify right side
    176.89x = 25,186.62
  5. Step 5: Solve for x
    x = 25,186.62/176.89
  6. Step 6: Final answer
    x = 142.39

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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.