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Finding the Fourth Proportional to 331.89, 497.80 and 88.43

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Solution

The fourth proportional to 331.89, 497.80 and 88.43 is: 132.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.89 : 497.80 = 88.43 : x
  2. Step 2: Convert to fraction form
    331.89/497.80 = 88.43/x
  3. Step 3: Cross multiply
    331.89x = 497.80 × 88.43
  4. Step 4: Simplify right side
    331.89x = 44,021.48
  5. Step 5: Solve for x
    x = 44,021.48/331.89
  6. Step 6: Final answer
    x = 132.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.