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Finding the Fourth Proportional to 176.31, 243.32 and 102.67

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Solution

The fourth proportional to 176.31, 243.32 and 102.67 is: 141.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.31 : 243.32 = 102.67 : x
  2. Step 2: Convert to fraction form
    176.31/243.32 = 102.67/x
  3. Step 3: Cross multiply
    176.31x = 243.32 × 102.67
  4. Step 4: Simplify right side
    176.31x = 24,980.54
  5. Step 5: Solve for x
    x = 24,980.54/176.31
  6. Step 6: Final answer
    x = 141.69

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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.