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Finding the Fourth Proportional to 148.88, 204.80 and 131.96

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Solution

The fourth proportional to 148.88, 204.80 and 131.96 is: 181.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    148.88 : 204.80 = 131.96 : x
  2. Step 2: Convert to fraction form
    148.88/204.80 = 131.96/x
  3. Step 3: Cross multiply
    148.88x = 204.80 × 131.96
  4. Step 4: Simplify right side
    148.88x = 27,025.26
  5. Step 5: Solve for x
    x = 27,025.26/148.88
  6. Step 6: Final answer
    x = 181.52

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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.