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Finding the Fourth Proportional to 176.60, 243.76 and 102.89

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Solution

The fourth proportional to 176.60, 243.76 and 102.89 is: 142.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.60 : 243.76 = 102.89 : x
  2. Step 2: Convert to fraction form
    176.60/243.76 = 102.89/x
  3. Step 3: Cross multiply
    176.60x = 243.76 × 102.89
  4. Step 4: Simplify right side
    176.60x = 25,080.82
  5. Step 5: Solve for x
    x = 25,080.82/176.60
  6. Step 6: Final answer
    x = 142.02

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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.