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Finding the Fourth Proportional to 269.12, 401.69 and 235.12

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Solution

The fourth proportional to 269.12, 401.69 and 235.12 is: 350.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.12 : 401.69 = 235.12 : x
  2. Step 2: Convert to fraction form
    269.12/401.69 = 235.12/x
  3. Step 3: Cross multiply
    269.12x = 401.69 × 235.12
  4. Step 4: Simplify right side
    269.12x = 94,445.35
  5. Step 5: Solve for x
    x = 94,445.35/269.12
  6. Step 6: Final answer
    x = 350.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.