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Finding the Fourth Proportional to 176.44, 243.21 and 148.76

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Solution

The fourth proportional to 176.44, 243.21 and 148.76 is: 205.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.44 : 243.21 = 148.76 : x
  2. Step 2: Convert to fraction form
    176.44/243.21 = 148.76/x
  3. Step 3: Cross multiply
    176.44x = 243.21 × 148.76
  4. Step 4: Simplify right side
    176.44x = 36,179.92
  5. Step 5: Solve for x
    x = 36,179.92/176.44
  6. Step 6: Final answer
    x = 205.06

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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.