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Finding the Fourth Proportional to 331.84, 497.34 and 187.64

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Solution

The fourth proportional to 331.84, 497.34 and 187.64 is: 281.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.84 : 497.34 = 187.64 : x
  2. Step 2: Convert to fraction form
    331.84/497.34 = 187.64/x
  3. Step 3: Cross multiply
    331.84x = 497.34 × 187.64
  4. Step 4: Simplify right side
    331.84x = 93,320.88
  5. Step 5: Solve for x
    x = 93,320.88/331.84
  6. Step 6: Final answer
    x = 281.22

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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.