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Finding the Fourth Proportional to 270.98, 406.49 and 97.64

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Solution

The fourth proportional to 270.98, 406.49 and 97.64 is: 146.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.98 : 406.49 = 97.64 : x
  2. Step 2: Convert to fraction form
    270.98/406.49 = 97.64/x
  3. Step 3: Cross multiply
    270.98x = 406.49 × 97.64
  4. Step 4: Simplify right side
    270.98x = 39,687.16
  5. Step 5: Solve for x
    x = 39,687.16/270.98
  6. Step 6: Final answer
    x = 146.46

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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.