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Finding the Fourth Proportional to 331.36, 497.08 and 187.08

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Solution

The fourth proportional to 331.36, 497.08 and 187.08 is: 280.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.36 : 497.08 = 187.08 : x
  2. Step 2: Convert to fraction form
    331.36/497.08 = 187.08/x
  3. Step 3: Cross multiply
    331.36x = 497.08 × 187.08
  4. Step 4: Simplify right side
    331.36x = 92,993.73
  5. Step 5: Solve for x
    x = 92,993.73/331.36
  6. Step 6: Final answer
    x = 280.64

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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.