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Finding the Fourth Proportional to 269.29, 403.74 and 153.42

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Solution

The fourth proportional to 269.29, 403.74 and 153.42 is: 230.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.29 : 403.74 = 153.42 : x
  2. Step 2: Convert to fraction form
    269.29/403.74 = 153.42/x
  3. Step 3: Cross multiply
    269.29x = 403.74 × 153.42
  4. Step 4: Simplify right side
    269.29x = 61,941.79
  5. Step 5: Solve for x
    x = 61,941.79/269.29
  6. Step 6: Final answer
    x = 230.02

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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.