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Finding the Fourth Proportional to 269.31, 403.91 and 123.01

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Solution

The fourth proportional to 269.31, 403.91 and 123.01 is: 184.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.31 : 403.91 = 123.01 : x
  2. Step 2: Convert to fraction form
    269.31/403.91 = 123.01/x
  3. Step 3: Cross multiply
    269.31x = 403.91 × 123.01
  4. Step 4: Simplify right side
    269.31x = 49,684.97
  5. Step 5: Solve for x
    x = 49,684.97/269.31
  6. Step 6: Final answer
    x = 184.49

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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.